sudo/sudo-1.9.13-CVE-2023-28486-7-9.patch

diff -up ./doc/sudoers.man.in.cve ./doc/sudoers.man.in
--- ./doc/sudoers.man.in.cve	2021-01-09 21:12:16.000000000 +0100
+++ ./doc/sudoers.man.in	2023-12-04 16:52:54.499061280 +0100
@@ -4978,14 +4978,31 @@ can log events via
 syslog(3),
 to a local log file, or both.
 The log format is almost identical in both cases.
+Any control characters present in the log data are formatted in octal
+with a leading
+\(oq#\(cq
+character.
+For example, a horizontal tab is stored as
+\(oq#011\(cq
+and an embedded carriage return is stored as
+\(oq#015\(cq.
+In addition, space characters in the command path are stored as
+\(oq#040\(cq.
+Command line arguments that contain spaces are enclosed in single quotes
+('').
+This makes it possible to distinguish multiple command line arguments
+from a single argument that contains spaces.
+Literal single quotes and backslash characters
+(\(oq\e\(cq)
+in command line arguments are escaped with a backslash.
 .SS "Accepted command log entries"
 Commands that sudo runs are logged using the following format (split
 into multiple lines for readability):
 .nf
 .sp
 .RS 4n
-date hostname progname: username : TTY=ttyname ; PWD=cwd ; \e
-    USER=runasuser ; GROUP=runasgroup ; TSID=logid ; \e
+date hostname progname: username : TTY=ttyname ; CHROOT=chroot ; \e
+    PWD=cwd ; USER=runasuser ; GROUP=runasgroup ; TSID=logid ; \e
     ENV=env_vars COMMAND=command
 .RE
 .fi
@@ -5034,6 +5051,9 @@ was run on, or
 \(lqunknown\(rq
 if there was no terminal present.
 .TP 14n
+chroot
+The root directory that the command was run in, if one was specified.
+.TP 14n
 cwd
 The current working directory that
 \fBsudo\fR
@@ -5058,7 +5078,7 @@ A list of environment variables specifie
 if specified.
 .TP 14n
 command
-The actual command that was executed.
+The actual command that was executed, including any command line arguments.
 .PP
 Messages are logged using the locale specified by
 \fIsudoers_locale\fR,
@@ -5294,17 +5314,21 @@ with a few important differences:
 1.\&
 The
 \fIprogname\fR
-and
-\fIhostname\fR
-fields are not present.
+field is not present.
 .TP 5n
 2.\&
-If the
-\fIlog_year\fR
-option is enabled,
-the date will also include the year.
+The
+\fIhostname\fR
+is only logged if the
+\fIlog_host\fR
+option is enabled.
 .TP 5n
 3.\&
+The date does not include the year unless the
+\fIlog_year\fR
+option is enabled.
+.TP 5n
+4.\&
 Lines that are longer than
 \fIloglinelen\fR
 characters (80 by default) are word-wrapped and continued on the
diff -up ./doc/sudoers.mdoc.in.cve ./doc/sudoers.mdoc.in
--- ./doc/sudoers.mdoc.in.cve	2021-01-09 21:12:16.000000000 +0100
+++ ./doc/sudoers.mdoc.in	2023-12-04 16:52:54.500061266 +0100
@@ -4649,12 +4649,29 @@ can log events via
 .Xr syslog 3 ,
 to a local log file, or both.
 The log format is almost identical in both cases.
+Any control characters present in the log data are formatted in octal
+with a leading
+.Ql #
+character.
+For example, a horizontal tab is stored as
+.Ql #011
+and an embedded carriage return is stored as
+.Ql #015 .
+In addition, space characters in the command path are stored as
+.Ql #040 .
+Command line arguments that contain spaces are enclosed in single quotes
+.Pq '' .
+This makes it possible to distinguish multiple command line arguments
+from a single argument that contains spaces.
+Literal single quotes and backslash characters
+.Pq Ql \e
+in command line arguments are escaped with a backslash.
 .Ss Accepted command log entries
 Commands that sudo runs are logged using the following format (split
 into multiple lines for readability):
 .Bd -literal -offset 4n
-date hostname progname: username : TTY=ttyname ; PWD=cwd ; \e
-    USER=runasuser ; GROUP=runasgroup ; TSID=logid ; \e
+date hostname progname: username : TTY=ttyname ; CHROOT=chroot ; \e
+    PWD=cwd ; USER=runasuser ; GROUP=runasgroup ; TSID=logid ; \e
     ENV=env_vars COMMAND=command
 .Ed
 .Pp
@@ -4697,6 +4714,8 @@ or
 was run on, or
 .Dq unknown
 if there was no terminal present.
+.It chroot
+The root directory that the command was run in, if one was specified.
 .It cwd
 The current working directory that
 .Nm sudo
@@ -4716,7 +4735,7 @@ option is enabled.
 A list of environment variables specified on the command line,
 if specified.
 .It command
-The actual command that was executed.
+The actual command that was executed, including any command line arguments.
 .El
 .Pp
 Messages are logged using the locale specified by
@@ -4938,14 +4957,17 @@ with a few important differences:
 .It
 The
 .Em progname
-and
+field is not present.
+.It
+The
 .Em hostname
-fields are not present.
+is only logged if the
+.Em log_host
+option is enabled.
 .It
-If the
+The date does not include the year unless the
 .Em log_year
-option is enabled,
-the date will also include the year.
+option is enabled.
 .It
 Lines that are longer than
 .Em loglinelen
diff -up ./doc/sudoreplay.man.in.cve ./doc/sudoreplay.man.in
--- ./doc/sudoreplay.man.in.cve	2020-12-17 02:33:43.000000000 +0100
+++ ./doc/sudoreplay.man.in	2023-12-04 16:52:54.500061266 +0100
@@ -164,6 +164,15 @@ In this mode,
 will list available sessions in a format similar to the
 \fBsudo\fR
 log file format, sorted by file name (or sequence number).
+Any control characters present in the log data are formated in octal
+with a leading
+\(oq#\(cq
+character.
+For example, a horizontal tab is displayed as
+\(oq#011\(cq
+and an embedded carriage return is displayed as
+\(oq#015\(cq.
+.sp
 If a
 \fIsearch expression\fR
 is specified, it will be used to restrict the IDs that are displayed.
diff -up ./doc/sudoreplay.mdoc.in.cve ./doc/sudoreplay.mdoc.in
--- ./doc/sudoreplay.mdoc.in.cve	2020-12-17 02:33:43.000000000 +0100
+++ ./doc/sudoreplay.mdoc.in	2023-12-04 16:52:54.500061266 +0100
@@ -156,6 +156,16 @@ In this mode,
 will list available sessions in a format similar to the
 .Nm sudo
 log file format, sorted by file name (or sequence number).
+Any control characters present in the log data are formatted in octal
+with a leading
+.Ql #
+character.
+For example, a horizontal tab is displayed as
+.Ql #011
+and an embedded carriage return is displayed as
+.Ql #015 .
+Space characters in the command name and arguments are also formatted in octal.
+.Pp
 If a
 .Ar search expression
 is specified, it will be used to restrict the IDs that are displayed.
diff -up ./include/sudo_lbuf.h.cve ./include/sudo_lbuf.h
--- ./include/sudo_lbuf.h.cve	2020-12-17 02:33:43.000000000 +0100
+++ ./include/sudo_lbuf.h	2023-12-04 16:52:54.500061266 +0100
@@ -36,9 +36,15 @@ struct sudo_lbuf {
 
 typedef int (*sudo_lbuf_output_t)(const char *);
 
+/* Flags for sudo_lbuf_append_esc() */
+#define LBUF_ESC_CNTRL	0x01
+#define LBUF_ESC_BLANK	0x02
+#define LBUF_ESC_QUOTE	0x04
+
 sudo_dso_public void sudo_lbuf_init_v1(struct sudo_lbuf *lbuf, sudo_lbuf_output_t output, int indent, const char *continuation, int cols);
 sudo_dso_public void sudo_lbuf_destroy_v1(struct sudo_lbuf *lbuf);
 sudo_dso_public bool sudo_lbuf_append_v1(struct sudo_lbuf *lbuf, const char *fmt, ...) __printflike(2, 3);
+sudo_dso_public bool sudo_lbuf_append_esc_v1(struct sudo_lbuf *lbuf, int flags, const char *fmt, ...) __printflike(3, 4);
 sudo_dso_public bool sudo_lbuf_append_quoted_v1(struct sudo_lbuf *lbuf, const char *set, const char *fmt, ...) __printflike(3, 4);
 sudo_dso_public void sudo_lbuf_print_v1(struct sudo_lbuf *lbuf);
 sudo_dso_public bool sudo_lbuf_error_v1(struct sudo_lbuf *lbuf);
@@ -47,6 +53,7 @@ sudo_dso_public void sudo_lbuf_clearerr_
 #define sudo_lbuf_init(_a, _b, _c, _d, _e) sudo_lbuf_init_v1((_a), (_b), (_c), (_d), (_e))
 #define sudo_lbuf_destroy(_a) sudo_lbuf_destroy_v1((_a))
 #define sudo_lbuf_append sudo_lbuf_append_v1
+#define sudo_lbuf_append_esc sudo_lbuf_append_esc_v1
 #define sudo_lbuf_append_quoted sudo_lbuf_append_quoted_v1
 #define sudo_lbuf_print(_a) sudo_lbuf_print_v1((_a))
 #define sudo_lbuf_error(_a) sudo_lbuf_error_v1((_a))
diff -up ./lib/eventlog/eventlog.c.cve ./lib/eventlog/eventlog.c
--- ./lib/eventlog/eventlog.c.cve	2023-12-04 16:52:54.497061306 +0100
+++ ./lib/eventlog/eventlog.c	2023-12-04 16:54:09.820048779 +0100
@@ -51,24 +51,13 @@
 #include "sudo_compat.h"
 #include "sudo_debug.h"
 #include "sudo_eventlog.h"
+#include "sudo_lbuf.h"
 #include "sudo_fatal.h"
 #include "sudo_gettext.h"
 #include "sudo_json.h"
 #include "sudo_queue.h"
 #include "sudo_util.h"
 
-#define	LL_HOST_STR	"HOST="
-#define	LL_TTY_STR	"TTY="
-#define	LL_CHROOT_STR	"CHROOT="
-#define	LL_CWD_STR	"PWD="
-#define	LL_USER_STR	"USER="
-#define	LL_GROUP_STR	"GROUP="
-#define	LL_ENV_STR	"ENV="
-#define	LL_CMND_STR	"COMMAND="
-#define	LL_TSID_STR	"TSID="
-#define	LL_EXIT_STR	"EXIT="
-#define	LL_SIGNAL_STR	"SIGNAL="
-
 #define IS_SESSID(s) ( \
     isalnum((unsigned char)(s)[0]) && isalnum((unsigned char)(s)[1]) && \
     (s)[2] == '/' && \
@@ -96,26 +85,28 @@ new_logline(int event_type, int flags, s
     const struct eventlog *evlog)
 {
     const struct eventlog_config *evl_conf = eventlog_getconf();
-    char *line = NULL, *evstr = NULL;
     const char *iolog_file;
     const char *tty, *tsid = NULL;
     char exit_str[(((sizeof(int) * 8) + 2) / 3) + 2];
     char sessid[7];
-    size_t len = 0;
+    struct sudo_lbuf lbuf;
     int i;
     debug_decl(new_logline, SUDO_DEBUG_UTIL);
 
+    sudo_lbuf_init(&lbuf, NULL, 0, NULL, 0);
+
     if (ISSET(flags, EVLOG_RAW) || evlog == NULL) {
 	if (args->reason != NULL) {
 	    if (args->errstr != NULL) {
-		if (asprintf(&line, "%s: %s", args->reason, args->errstr) == -1)
-		    goto oom;
+		sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "%s: %s",
+		    args->reason, args->errstr);
 	    } else {
-		if ((line = strdup(args->reason)) == NULL)
-		    goto oom;
+		sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "%s", args->reason);
 	    }
+	    if (sudo_lbuf_error(&lbuf))
+		goto oom;
 	}
-	debug_return_str(line);
+	debug_return_str(lbuf.buf);
     }
 
     /* A TSID may be a sudoers-style session ID or a free-form string. */
@@ -142,163 +133,92 @@ new_logline(int event_type, int flags, s
     }
 
     /*
-     * Compute line length
+     * Format the log line as an lbuf, escaping control characters is
+     * octal form (#0nn).  Error checking (ENOMEM) is done at the end
      */
-    if (args->reason != NULL)
-	len += strlen(args->reason) + 3;
-    if (args->errstr != NULL)
-	len += strlen(args->errstr) + 3;
-    if (evlog->submithost != NULL && !evl_conf->omit_hostname)
-	len += sizeof(LL_HOST_STR) + 2 + strlen(evlog->submithost);
-    if (tty != NULL)
-	len += sizeof(LL_TTY_STR) + 2 + strlen(tty);
-    if (evlog->runchroot != NULL)
-	len += sizeof(LL_CHROOT_STR) + 2 + strlen(evlog->runchroot);
-    if (evlog->runcwd != NULL)
-	len += sizeof(LL_CWD_STR) + 2 + strlen(evlog->runcwd);
-    if (evlog->runuser != NULL)
-	len += sizeof(LL_USER_STR) + 2 + strlen(evlog->runuser);
-    if (evlog->rungroup != NULL)
-	len += sizeof(LL_GROUP_STR) + 2 + strlen(evlog->rungroup);
-    if (tsid != NULL)
-	len += sizeof(LL_TSID_STR) + 2 + strlen(tsid);
-    if (evlog->env_add != NULL) {
-	size_t evlen = 0;
-	char * const *ep;
-
-	for (ep = evlog->env_add; *ep != NULL; ep++)
-	    evlen += strlen(*ep) + 1;
-	if (evlen != 0) {
-	    if ((evstr = malloc(evlen)) == NULL)
-		goto oom;
-	    ep = evlog->env_add;
-	    if (strlcpy(evstr, *ep, evlen) >= evlen)
-		goto toobig;
-	    while (*++ep != NULL) {
-		if (strlcat(evstr, " ", evlen) >= evlen ||
-		    strlcat(evstr, *ep, evlen) >= evlen)
-		    goto toobig;
-	    }
-	    len += sizeof(LL_ENV_STR) + 2 + evlen;
-	}
-    }
-    if (evlog->command != NULL) {
-	len += sizeof(LL_CMND_STR) - 1 + strlen(evlog->command);
-	if (evlog->argv != NULL) {
-	    for (i = 1; evlog->argv[i] != NULL; i++)
-		len += strlen(evlog->argv[i]) + 1;
-	}
-	if (event_type == EVLOG_EXIT) {
-	    if (args->signal_name != NULL)
-		len += sizeof(LL_SIGNAL_STR) + 2 + strlen(args->signal_name);
-	    (void)snprintf(exit_str, sizeof(exit_str), "%d", args->exit_value);
-	    len += sizeof(LL_EXIT_STR) + 2 + strlen(exit_str);
-	}
-    }
-
-    /*
-     * Allocate and build up the line.
-     */
-    if ((line = malloc(++len)) == NULL)
-	goto oom;
-    line[0] = '\0';
-
     if (args->reason != NULL) {
-	if (strlcat(line, args->reason, len) >= len ||
-	    strlcat(line, args->errstr ? " : " : " ; ", len) >= len)
-	    goto toobig;
+        sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "%s%s", args->reason,
+                         args->errstr ? " : " : " ; ");
     }
     if (args->errstr != NULL) {
-	if (strlcat(line, args->errstr, len) >= len ||
-	    strlcat(line, " ; ", len) >= len)
-	    goto toobig;
+         sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "%s ; ", args->errstr);
     }
     if (evlog->submithost != NULL && !evl_conf->omit_hostname) {
-	if (strlcat(line, LL_HOST_STR, len) >= len ||
-	    strlcat(line, evlog->submithost, len) >= len ||
-	    strlcat(line, " ; ", len) >= len)
-	    goto toobig;
+        sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "HOST=%s ; ",
+                             evlog->submithost);
     }
     if (tty != NULL) {
-	if (strlcat(line, LL_TTY_STR, len) >= len ||
-	    strlcat(line, tty, len) >= len ||
-	    strlcat(line, " ; ", len) >= len)
-	    goto toobig;
+        sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "TTY=%s ; ", tty);
     }
     if (evlog->runchroot != NULL) {
-	if (strlcat(line, LL_CHROOT_STR, len) >= len ||
-	    strlcat(line, evlog->runchroot, len) >= len ||
-	    strlcat(line, " ; ", len) >= len)
-	    goto toobig;
+        sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "CHROOT=%s ; ",
+                             evlog->runchroot);
     }
     if (evlog->runcwd != NULL) {
-	if (strlcat(line, LL_CWD_STR, len) >= len ||
-	    strlcat(line, evlog->runcwd, len) >= len ||
-	    strlcat(line, " ; ", len) >= len)
-	    goto toobig;
+        sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "PWD=%s ; ",
+                             evlog->runcwd);
     }
     if (evlog->runuser != NULL) {
-	if (strlcat(line, LL_USER_STR, len) >= len ||
-	    strlcat(line, evlog->runuser, len) >= len ||
-	    strlcat(line, " ; ", len) >= len)
-	    goto toobig;
+         sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "USER=%s ; ",
+                              evlog->runuser);
     }
     if (evlog->rungroup != NULL) {
-	if (strlcat(line, LL_GROUP_STR, len) >= len ||
-	    strlcat(line, evlog->rungroup, len) >= len ||
-	    strlcat(line, " ; ", len) >= len)
-	    goto toobig;
-    }
+         sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "GROUP=%s ; ",
+                              evlog->rungroup);
+	}
     if (tsid != NULL) {
-	if (strlcat(line, LL_TSID_STR, len) >= len ||
-	    strlcat(line, tsid, len) >= len ||
-	    strlcat(line, " ; ", len) >= len)
-	    goto toobig;
-    }
-    if (evstr != NULL) {
-	if (strlcat(line, LL_ENV_STR, len) >= len ||
-	    strlcat(line, evstr, len) >= len ||
-	    strlcat(line, " ; ", len) >= len)
-	    goto toobig;
-	free(evstr);
-	evstr = NULL;
+         sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "TSID=%s ; ", tsid);
+    }
+    if (evlog->env_add != NULL && evlog->env_add[0] != NULL) {
+        sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "ENV=%s",
+                             evlog->env_add[0]);
+        for (i = 1; evlog->env_add[i] != NULL; i++) {
+            sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, " %s",
+                                 evlog->env_add[i]);
+        }
     }
     if (evlog->command != NULL) {
-	if (strlcat(line, LL_CMND_STR, len) >= len)
-	    goto toobig;
-	if (strlcat(line, evlog->command, len) >= len)
-	    goto toobig;
-	if (evlog->argv != NULL) {
+        sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL|LBUF_ESC_BLANK,
+                             "COMMAND=%s", evlog->command);
+	if (evlog->argv != NULL && evlog->argv[0] != NULL) {
 	    for (i = 1; evlog->argv[i] != NULL; i++) {
-		if (strlcat(line, " ", len) >= len ||
-		    strlcat(line, evlog->argv[i], len) >= len)
-		    goto toobig;
+            sudo_lbuf_append(&lbuf, " ");
+            if (strchr(evlog->argv[i], ' ') != NULL) {
+                /* Wrap args containing spaces in single quotes. */
+                sudo_lbuf_append(&lbuf, "'");
+                sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL|LBUF_ESC_QUOTE,
+                                     "%s", evlog->argv[i]);
+                sudo_lbuf_append(&lbuf, "'");
+            } else {
+                /* Escape quotes here too for consistency. */
+                sudo_lbuf_append_esc(&lbuf,
+                                     LBUF_ESC_CNTRL|LBUF_ESC_BLANK|LBUF_ESC_QUOTE,
+                                     "%s", evlog->argv[i]);
+            }
 	    }
 	}
+/*
 	if (event_type == EVLOG_EXIT) {
 	    if (args->signal_name != NULL) {
-		if (strlcat(line, " ; ", len) >= len ||
-		    strlcat(line, LL_SIGNAL_STR, len) >= len ||
-		    strlcat(line, args->signal_name, len) >= len)
-		    goto toobig;
+             sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, " ; SIGNAL=%s",
+                                  evlog->signal_name);
 	    }
-	    if (strlcat(line, " ; ", len) >= len ||
-		strlcat(line, LL_EXIT_STR, len) >= len ||
-		strlcat(line, exit_str, len) >= len)
-		goto toobig;
+        if (evlog->exit_value != -1) {
+            (void)snprintf(exit_str, sizeof(exit_str), "%d",
+                           evlog->exit_value);
+            sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, " ; EXIT=%s",
+                                 exit_str);
+        }
 	}
+*/
     }
 
-    debug_return_str(line);
+    if (!sudo_lbuf_error(&lbuf))
+        debug_return_str(lbuf.buf);
 oom:
-    free(evstr);
+    sudo_lbuf_destroy(&lbuf);
     sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
     debug_return_str(NULL);
-toobig:
-    free(evstr);
-    free(line);
-    sudo_warnx(U_("internal error, %s overflow"), __func__);
-    debug_return_str(NULL);
 }
 
 static void
diff -up ./lib/iolog/iolog_json.c.cve ./lib/iolog/iolog_json.c
--- ./lib/iolog/iolog_json.c.cve	2020-12-17 02:33:43.000000000 +0100
+++ ./lib/iolog/iolog_json.c	2023-12-04 16:52:54.500061266 +0100
@@ -443,35 +443,6 @@ iolog_parse_json_object(struct json_obje
 	}
     }
 
-    /* Merge cmd and argv as sudoreplay expects. */
-    if (evlog->command != NULL && evlog->argv != NULL) {
-	size_t len = strlen(evlog->command) + 1;
-	char *newcmd;
-	int ac;
-
-	/* Skip argv[0], we use evlog->command instead. */
-	for (ac = 1; evlog->argv[ac] != NULL; ac++)
-	    len += strlen(evlog->argv[ac]) + 1;
-
-	if ((newcmd = malloc(len)) == NULL) {
-	    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
-	    goto done;
-	}
-
-	/* TODO: optimize this. */
-	if (strlcpy(newcmd, evlog->command, len) >= len)
-	    sudo_fatalx(U_("internal error, %s overflow"), __func__);
-	for (ac = 1; evlog->argv[ac] != NULL; ac++) {
-	    if (strlcat(newcmd, " ", len) >= len)
-		sudo_fatalx(U_("internal error, %s overflow"), __func__);
-	    if (strlcat(newcmd, evlog->argv[ac], len) >= len)
-		sudo_fatalx(U_("internal error, %s overflow"), __func__);
-	}
-
-	free(evlog->command);
-	evlog->command = newcmd;
-    }
-
     ret = true;
 
 done:
diff -up ./lib/util/lbuf.c.cve ./lib/util/lbuf.c
--- ./lib/util/lbuf.c.cve	2020-12-17 02:33:43.000000000 +0100
+++ ./lib/util/lbuf.c	2023-12-04 16:52:54.501061253 +0100
@@ -85,6 +85,112 @@ sudo_lbuf_expand(struct sudo_lbuf *lbuf,
 }
 
 /*
+ * Escape a character in octal form (#0n) and store it as a string
+ * in buf, which must have at least 6 bytes available.
+ * Returns the length of buf, not counting the terminating NUL byte.
+ */
+static int
+escape(unsigned char ch, char *buf)
+{
+    const int len = ch < 0100 ? (ch < 010 ? 3 : 4) : 5;
+
+    /* Work backwards from the least significant digit to most significant. */
+    switch (len) {
+    case 5:
+	buf[4] = (ch & 7) + '0';
+	ch >>= 3;
+	FALLTHROUGH;
+    case 4:
+	buf[3] = (ch & 7) + '0';
+	ch >>= 3;
+	FALLTHROUGH;
+    case 3:
+	buf[2] = (ch & 7) + '0';
+	buf[1] = '0';
+	buf[0] = '#';
+	break;
+    }
+    buf[len] = '\0';
+
+    return len;
+}
+
+/*
+ * Parse the format and append strings, only %s and %% escapes are supported.
+ * Any non-printable characters are escaped in octal as #0nn.
+ */
+bool
+sudo_lbuf_append_esc_v1(struct sudo_lbuf *lbuf, int flags, const char *fmt, ...)
+{
+    unsigned int saved_len = lbuf->len;
+    bool ret = false;
+    const char *s;
+    va_list ap;
+    debug_decl(sudo_lbuf_append_esc, SUDO_DEBUG_UTIL);
+
+    if (sudo_lbuf_error(lbuf))
+	debug_return_bool(false);
+
+#define should_escape(ch) \
+    ((ISSET(flags, LBUF_ESC_CNTRL) && iscntrl((unsigned char)ch)) || \
+    (ISSET(flags, LBUF_ESC_BLANK) && isblank((unsigned char)ch)))
+#define should_quote(ch) \
+    (ISSET(flags, LBUF_ESC_QUOTE) && (ch == '\'' || ch == '\\'))
+
+    va_start(ap, fmt);
+    while (*fmt != '\0') {
+	if (fmt[0] == '%' && fmt[1] == 's') {
+	    if ((s = va_arg(ap, char *)) == NULL)
+		s = "(NULL)";
+	    while (*s != '\0') {
+		if (should_escape(*s)) {
+		    if (!sudo_lbuf_expand(lbuf, sizeof("#0177") - 1))
+			goto done;
+		    lbuf->len += escape(*s++, lbuf->buf + lbuf->len);
+		    continue;
+		}
+		if (should_quote(*s)) {
+		    if (!sudo_lbuf_expand(lbuf, 2))
+			goto done;
+		    lbuf->buf[lbuf->len++] = '\\';
+		    lbuf->buf[lbuf->len++] = *s++;
+		    continue;
+		}
+		if (!sudo_lbuf_expand(lbuf, 1))
+		    goto done;
+		lbuf->buf[lbuf->len++] = *s++;
+	    }
+	    fmt += 2;
+	    continue;
+	}
+	if (should_escape(*fmt)) {
+	    if (!sudo_lbuf_expand(lbuf, sizeof("#0177") - 1))
+		goto done;
+	    if (*fmt == '\'') {
+		lbuf->buf[lbuf->len++] = '\\';
+		lbuf->buf[lbuf->len++] = *fmt++;
+	    } else {
+		lbuf->len += escape(*fmt++, lbuf->buf + lbuf->len);
+	    }
+	    continue;
+	}
+	if (!sudo_lbuf_expand(lbuf, 1))
+	    goto done;
+	lbuf->buf[lbuf->len++] = *fmt++;
+    }
+    ret = true;
+
+done:
+    if (!ret)
+	lbuf->len = saved_len;
+    if (lbuf->size != 0)
+	lbuf->buf[lbuf->len] = '\0';
+    va_end(ap);
+
+    debug_return_bool(ret);
+}
+
+/*
  * Parse the format and append strings, only %s and %% escapes are supported.
  * Any characters in set are quoted with a backslash.
  */
diff -up ./lib/util/util.exp.in.cve ./lib/util/util.exp.in
--- ./lib/util/util.exp.in.cve	2021-01-09 21:12:16.000000000 +0100
+++ ./lib/util/util.exp.in	2023-12-04 16:52:54.501061253 +0100
@@ -95,6 +95,7 @@ sudo_json_get_len_v1
 sudo_json_init_v1
 sudo_json_open_array_v1
 sudo_json_open_object_v1
+sudo_lbuf_append_esc_v1
 sudo_lbuf_append_quoted_v1
 sudo_lbuf_append_v1
 sudo_lbuf_clearerr_v1
diff -up ./plugins/sudoers/sudoreplay.c.cve ./plugins/sudoers/sudoreplay.c
--- ./plugins/sudoers/sudoreplay.c.cve	2023-12-04 16:52:54.498061293 +0100
+++ ./plugins/sudoers/sudoreplay.c	2023-12-04 16:52:54.501061253 +0100
@@ -62,6 +62,7 @@
 #include "sudo_debug.h"
 #include "sudo_event.h"
 #include "sudo_eventlog.h"
+#include "sudo_lbuf.h"
 #include "sudo_fatal.h"
 #include "sudo_gettext.h"
 #include "sudo_iolog.h"
@@ -363,6 +364,10 @@ main(int argc, char *argv[])
     if ((evlog = iolog_parse_loginfo(iolog_dir_fd, iolog_dir)) == NULL)
 	goto done;
     printf(_("Replaying sudo session: %s"), evlog->command);
+    if (evlog->argv != NULL && evlog->argv[0] != NULL) {
+	for (i = 1; evlog->argv[i] != NULL; i++)
+	    printf(" %s", evlog->argv[i]);
+    }
 
     /* Setup terminal if appropriate. */
     if (!isatty(STDIN_FILENO) || !isatty(STDOUT_FILENO))
@@ -1291,11 +1296,57 @@ parse_expr(struct search_node_list *head
     debug_return_int(av - argv);
 }
 
+static char *
+expand_command(struct eventlog *evlog, char **newbuf)
+{
+    size_t len, bufsize = strlen(evlog->command) + 1;
+    char *cp, *buf;
+    int ac;
+    debug_decl(expand_command, SUDO_DEBUG_UTIL);
+
+    if (evlog->argv == NULL || evlog->argv[0] == NULL || evlog->argv[1] == NULL) {
+	/* No arguments, we can use the command as-is. */
+	*newbuf = NULL;
+	debug_return_str(evlog->command);
+    }
+
+    /* Skip argv[0], we use evlog->command instead. */
+    for (ac = 1; evlog->argv[ac] != NULL; ac++)
+	bufsize += strlen(evlog->argv[ac]) + 1;
+
+    if ((buf = malloc(bufsize)) == NULL)
+	sudo_fatalx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+    cp = buf;
+
+    len = strlcpy(cp, evlog->command, bufsize);
+    if (len >= bufsize)
+	sudo_fatalx(U_("internal error, %s overflow"), __func__);
+    cp += len;
+    bufsize -= len;
+
+    for (ac = 1; evlog->argv[ac] != NULL; ac++) {
+	if (bufsize < 2)
+	    sudo_fatalx(U_("internal error, %s overflow"), __func__);
+	*cp++ = ' ';
+	bufsize--;
+
+	len = strlcpy(cp, evlog->argv[ac], bufsize);
+	if (len >= bufsize)
+	    sudo_fatalx(U_("internal error, %s overflow"), __func__);
+	cp += len;
+	bufsize -= len;
+    }
+
+    *newbuf = buf;
+    debug_return_str(buf);
+}
+
 static bool
 match_expr(struct search_node_list *head, struct eventlog *evlog, bool last_match)
 {
     struct search_node *sn;
     bool res = false, matched = last_match;
+    char *tofree;
     int rc;
     debug_decl(match_expr, SUDO_DEBUG_UTIL);
 
@@ -1329,13 +1380,15 @@ match_expr(struct search_node_list *head
 		res = strcmp(sn->u.user, evlog->submituser) == 0;
 	    break;
 	case ST_PATTERN:
-	    rc = regexec(&sn->u.cmdre, evlog->command, 0, NULL, 0);
+	    rc = regexec(&sn->u.cmdre, expand_command(evlog, &tofree),
+		0, NULL, 0);
 	    if (rc && rc != REG_NOMATCH) {
 		char buf[BUFSIZ];
 		regerror(rc, &sn->u.cmdre, buf, sizeof(buf));
 		sudo_fatalx("%s", buf);
 	    }
 	    res = rc == REG_NOMATCH ? 0 : 1;
+	    free(tofree);
 	    break;
 	case ST_FROMDATE:
 	    res = sudo_timespeccmp(&evlog->submit_time, &sn->u.tstamp, >=);
@@ -1356,12 +1409,13 @@ match_expr(struct search_node_list *head
 }
 
 static int
-list_session(char *log_dir, regex_t *re, const char *user, const char *tty)
+list_session(struct sudo_lbuf *lbuf, char *log_dir, regex_t *re,
+    const char *user, const char *tty)
 {
     char idbuf[7], *idstr, *cp;
     struct eventlog *evlog = NULL;
     const char *timestr;
-    int ret = -1;
+    int i, ret = -1;
     debug_decl(list_session, SUDO_DEBUG_UTIL);
 
     if ((evlog = iolog_parse_loginfo(-1, log_dir)) == NULL)
@@ -1393,23 +1447,71 @@ list_session(char *log_dir, regex_t *re,
     }
     /* XXX - print lines + cols? */
     timestr = get_timestr(evlog->submit_time.tv_sec, 1);
-    printf("%s : %s : ", timestr ? timestr : "invalid date", evlog->submituser);
-    if (evlog->submithost != NULL)
-	printf("HOST=%s ; ", evlog->submithost);
-    if (evlog->ttyname != NULL)
-	printf("TTY=%s ; ", evlog->ttyname);
-    if (evlog->runchroot != NULL)
-	printf("CHROOT=%s ; ", evlog->runchroot);
-    if (evlog->runcwd != NULL || evlog->cwd != NULL)
-	printf("CWD=%s ; ", evlog->runcwd ? evlog->runcwd : evlog->cwd);
-    printf("USER=%s ; ", evlog->runuser);
-    if (evlog->rungroup != NULL)
-	printf("GROUP=%s ; ", evlog->rungroup);
-    printf("TSID=%s ; COMMAND=%s\n", idstr, evlog->command);
+    sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "%s : %s : ",
+	timestr ? timestr : "invalid date", evlog->submituser);
+    if (evlog->submithost != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "HOST=%s ; ",
+	    evlog->submithost);
+    }
+    if (evlog->ttyname != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "TTY=%s ; ",
+	    evlog->ttyname);
+    }
+    if (evlog->runchroot != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "CHROOT=%s ; ",
+	    evlog->runchroot);
+    }
+    if (evlog->runcwd != NULL || evlog->cwd != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "CWD=%s ; ",
+	    evlog->runcwd ? evlog->runcwd : evlog->cwd);
+    }
+    sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "USER=%s ; ", evlog->runuser);
+    if (evlog->rungroup != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "GROUP=%s ; ",
+	    evlog->rungroup);
+    }
+    sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "TSID=%s ; ", idstr);
+
+    /* 
+     * If we have both command and argv from info.json we can escape
+     * blanks in the the command and arguments.  If all we have is a
+     * single string containing both the command and arguments we cannot.
+     */
+    if (evlog->argv != NULL) {
+	/* Command plus argv from the info.json file. */
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL|LBUF_ESC_BLANK,
+	    "COMMAND=%s", evlog->command);
+	if (evlog->argv[0] != NULL) {
+	    for (i = 1; evlog->argv[i] != NULL; i++) {
+		sudo_lbuf_append(lbuf, " ");
+		if (strchr(evlog->argv[i], ' ') != NULL) {
+		    /* Wrap args containing spaces in single quotes. */
+		    sudo_lbuf_append(lbuf, "'");
+		    sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL|LBUF_ESC_QUOTE,
+			"%s", evlog->argv[i]);
+		    sudo_lbuf_append(lbuf, "'");
+		} else {
+		    /* Escape quotes here too for consistency. */
+		    sudo_lbuf_append_esc(lbuf,
+			LBUF_ESC_CNTRL|LBUF_ESC_BLANK|LBUF_ESC_QUOTE,
+			"%s", evlog->argv[i]);
+		}
+	    }
+	}
+    } else {
+	/* Single string from the legacy info file. */
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "COMMAND=%s",
+	    evlog->command);
+    }
 
-    ret = 0;
+    if (!sudo_lbuf_error(lbuf)) {
+	puts(lbuf->buf);
+	ret = 0;
+    }
 
 done:
+    lbuf->error = 0;
+    lbuf->len = 0;
     eventlog_free(evlog);
     debug_return_int(ret);
 }
@@ -1429,6 +1531,7 @@ find_sessions(const char *dir, regex_t *
     DIR *d;
     struct dirent *dp;
     struct stat sb;
+    struct sudo_lbuf lbuf;
     size_t sdlen, sessions_len = 0, sessions_size = 0;
     unsigned int i;
     int len;
@@ -1440,6 +1543,8 @@ find_sessions(const char *dir, regex_t *
 #endif
     debug_decl(find_sessions, SUDO_DEBUG_UTIL);
 
+    sudo_lbuf_init(&lbuf, NULL, 0, NULL, 0);
+
     d = opendir(dir);
     if (d == NULL)
 	sudo_fatal(U_("unable to open %s"), dir);
@@ -1500,7 +1605,7 @@ find_sessions(const char *dir, regex_t *
 	    /* Check for dir with a log file. */
 	    if (lstat(pathbuf, &sb) == 0 && S_ISREG(sb.st_mode)) {
 		pathbuf[sdlen + len - 4] = '\0';
-		list_session(pathbuf, re, user, tty);
+		list_session(&lbuf, pathbuf, re, user, tty);
 	    } else {
 		/* Strip off "/log" and recurse if a non-log dir. */
 		pathbuf[sdlen + len - 4] = '\0';
@@ -1511,6 +1616,7 @@ find_sessions(const char *dir, regex_t *
 	}
 	free(sessions);
     }
+    sudo_lbuf_destroy(&lbuf);
 
     debug_return_int(0);
 }