import sudo-1.8.29-6.el8
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d3ad6b3add
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830d1fc442
154
SOURCES/sudo-1.8.29-expired-password-part1.patch
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154
SOURCES/sudo-1.8.29-expired-password-part1.patch
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@ -0,0 +1,154 @@
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From 4b6de608c25a6ffbdb507be958e12f814b43077c Mon Sep 17 00:00:00 2001
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From: "Todd C. Miller" <Todd.Miller@sudo.ws>
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Date: Wed, 4 Dec 2019 12:38:22 -0700
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Subject: [PATCH] Only update the time stamp entry after the approval function
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has succeeded. Bug #910
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---
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plugins/sudoers/check.c | 59 +++++++++++++++++++----------------------
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1 file changed, 27 insertions(+), 32 deletions(-)
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diff --git a/plugins/sudoers/check.c b/plugins/sudoers/check.c
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index db8e05161..ea1d89085 100644
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--- a/plugins/sudoers/check.c
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+++ b/plugins/sudoers/check.c
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@@ -51,6 +51,7 @@ static bool display_lecture(int);
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static struct passwd *get_authpw(int);
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struct getpass_closure {
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+ int tstat;
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void *cookie;
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struct passwd *auth_pw;
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};
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@@ -89,27 +90,20 @@ getpass_resume(int signo, void *vclosure)
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* or -1 on fatal error.
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*/
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static int
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-check_user_interactive(int validated, int mode, struct passwd *auth_pw)
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+check_user_interactive(int validated, int mode, struct getpass_closure *closure)
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{
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struct sudo_conv_callback cb, *callback = NULL;
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- struct getpass_closure closure;
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- int status = TS_ERROR;
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int ret = -1;
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char *prompt;
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bool lectured;
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debug_decl(check_user_interactive, SUDOERS_DEBUG_AUTH)
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- /* Setup closure for getpass_{suspend,resume} */
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- closure.auth_pw = auth_pw;
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- closure.cookie = NULL;
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- sudo_pw_addref(closure.auth_pw);
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-
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/* Open, lock and read time stamp file if we are using it. */
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if (!ISSET(mode, MODE_IGNORE_TICKET)) {
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/* Open time stamp file and check its status. */
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- closure.cookie = timestamp_open(user_name, user_sid);
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- if (timestamp_lock(closure.cookie, closure.auth_pw))
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- status = timestamp_status(closure.cookie, closure.auth_pw);
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+ closure->cookie = timestamp_open(user_name, user_sid);
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+ if (timestamp_lock(closure->cookie, closure->auth_pw))
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+ closure->tstat = timestamp_status(closure->cookie, closure->auth_pw);
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/* Construct callback for getpass function. */
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memset(&cb, 0, sizeof(cb));
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@@ -120,7 +114,7 @@ check_user_interactive(int validated, int mode, struct passwd *auth_pw)
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callback = &cb;
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}
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- switch (status) {
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+ switch (closure->tstat) {
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case TS_FATAL:
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/* Fatal error (usually setuid failure), unsafe to proceed. */
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goto done;
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@@ -144,32 +138,22 @@ check_user_interactive(int validated, int mode, struct passwd *auth_pw)
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}
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/* XXX - should not lecture if askpass helper is being used. */
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- lectured = display_lecture(status);
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+ lectured = display_lecture(closure->tstat);
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/* Expand any escapes in the prompt. */
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prompt = expand_prompt(user_prompt ? user_prompt : def_passprompt,
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- closure.auth_pw->pw_name);
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+ closure->auth_pw->pw_name);
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if (prompt == NULL)
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goto done;
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- ret = verify_user(closure.auth_pw, prompt, validated, callback);
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+ ret = verify_user(closure->auth_pw, prompt, validated, callback);
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if (ret == true && lectured)
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(void)set_lectured(); /* lecture error not fatal */
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free(prompt);
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break;
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}
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- /*
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- * Only update time stamp if user was validated.
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- * Failure to update the time stamp is not a fatal error.
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- */
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- if (ret == true && ISSET(validated, VALIDATE_SUCCESS) && status != TS_ERROR)
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- (void)timestamp_update(closure.cookie, closure.auth_pw);
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done:
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- if (closure.cookie != NULL)
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- timestamp_close(closure.cookie);
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- sudo_pw_delref(closure.auth_pw);
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-
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debug_return_int(ret);
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}
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@@ -180,7 +164,7 @@ done:
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int
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check_user(int validated, int mode)
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{
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- struct passwd *auth_pw;
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+ struct getpass_closure closure = { TS_ERROR };
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int ret = -1;
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bool exempt = false;
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debug_decl(check_user, SUDOERS_DEBUG_AUTH)
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@@ -189,9 +173,9 @@ check_user(int validated, int mode)
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* Init authentication system regardless of whether we need a password.
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* Required for proper PAM session support.
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*/
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- if ((auth_pw = get_authpw(mode)) == NULL)
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+ if ((closure.auth_pw = get_authpw(mode)) == NULL)
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goto done;
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- if (sudo_auth_init(auth_pw) == -1)
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+ if (sudo_auth_init(closure.auth_pw) == -1)
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goto done;
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/*
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@@ -222,15 +206,26 @@ check_user(int validated, int mode)
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}
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}
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- ret = check_user_interactive(validated, mode, auth_pw);
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+ ret = check_user_interactive(validated, mode, &closure);
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done:
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if (ret == true) {
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/* The approval function may disallow a user post-authentication. */
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- ret = sudo_auth_approval(auth_pw, validated, exempt);
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+ ret = sudo_auth_approval(closure.auth_pw, validated, exempt);
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+
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+ /*
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+ * Only update time stamp if user validated and was approved.
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+ * Failure to update the time stamp is not a fatal error.
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+ */
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+ if (ret == true && closure.tstat != TS_ERROR) {
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+ if (ISSET(validated, VALIDATE_SUCCESS))
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+ (void)timestamp_update(closure.cookie, closure.auth_pw);
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+ }
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}
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- sudo_auth_cleanup(auth_pw);
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- sudo_pw_delref(auth_pw);
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+ timestamp_close(closure.cookie);
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+ sudo_auth_cleanup(closure.auth_pw);
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+ if (closure.auth_pw != NULL)
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+ sudo_pw_delref(closure.auth_pw);
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debug_return_int(ret);
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}
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--
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2.25.1
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29
SOURCES/sudo-1.8.29-expired-password-part2.patch
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29
SOURCES/sudo-1.8.29-expired-password-part2.patch
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@ -0,0 +1,29 @@
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From 5472b1751645f750e42a0ba6daac667983b1a56c Mon Sep 17 00:00:00 2001
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From: "Todd C. Miller" <Todd.Miller@sudo.ws>
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Date: Fri, 24 Jan 2020 11:13:55 -0700
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Subject: [PATCH] Fix crash in sudo 1.8.30 when suspending sudo at the password
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prompt. The closure pointer in sudo_conv_callback was being filled in with a
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struct getpass_closure ** instead of a struct getpass_closure *. The bug was
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introduced in the fix for Bug #910; previously the closure variable was a
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struct getpass_closure, not a pointer. Fix from Michael Norton; Bug #914.
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---
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plugins/sudoers/check.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/plugins/sudoers/check.c b/plugins/sudoers/check.c
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index 72e87eef6..9b03c7a05 100644
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--- a/plugins/sudoers/check.c
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+++ b/plugins/sudoers/check.c
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@@ -108,7 +108,7 @@ check_user_interactive(int validated, int mode, struct getpass_closure *closure)
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/* Construct callback for getpass function. */
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memset(&cb, 0, sizeof(cb));
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cb.version = SUDO_CONV_CALLBACK_VERSION;
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- cb.closure = &closure;
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+ cb.closure = closure;
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cb.on_suspend = getpass_suspend;
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cb.on_resume = getpass_resume;
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callback = &cb;
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--
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2.25.1
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Summary: Allows restricted root access for specified users
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Name: sudo
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Version: 1.8.29
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Release: 5%{?dist}
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Release: 6%{?dist}
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License: ISC
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Group: Applications/System
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URL: http://www.courtesan.com/sudo/
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@ -52,6 +52,10 @@ Patch8: sudo-1.8.29-CVE-2019-19234.patch
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# 1798093 - CVE-2019-18634 sudo: Stack based buffer overflow in when pwfeedback is enabled [rhel-8.2.0]
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Patch9: sudo-1.8.29-CVE-2019-18634.patch
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# 1815164 - sudo allows privilege escalation with expire password
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Patch10: sudo-1.8.29-expired-password-part1.patch
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Patch11: sudo-1.8.29-expired-password-part2.patch
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%description
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Sudo (superuser do) allows a system administrator to give certain
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users (or groups of users) the ability to run some (or all) commands
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@ -85,6 +89,9 @@ plugins that use %{name}.
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%patch8 -p1 -b .target-shell
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%patch9 -p1 -b .CVE-2019-18634
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%patch10 -p1 -b .expired1
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%patch11 -p1 -b .expired2
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%build
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# Remove bundled copy of zlib
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rm -rf zlib/
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@ -243,6 +250,11 @@ rm -rf $RPM_BUILD_ROOT
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%{_mandir}/man8/sudo_plugin.8*
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%changelog
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* Tue Apr 28 2020 Radovan Sroka <rsroka@redhat.com> - 1.8.29-6
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- RHEL 8.3 ERRATUM
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- sudo allows privilege escalation with expire password
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Resolves: rhbz#1815164
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* Wed Feb 05 2020 Radovan Sroka <rsroka@redhat.com> - 1.8.29-5
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- RHEL 8.2 ERRATUM
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- CVE-2019-18634
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