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logrotate/SOURCES/0006-logrotate-3.14.0-stricter-config-parser.patch

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import logrotate-3.14.0-6.el8
2023-05-16 06:15:15 +00:00
From 92067ac8e75b3d1f431982d8156da5ffb18df249 Mon Sep 17 00:00:00 2001
From: Kamil Dudka <kdudka@redhat.com>
Date: Thu, 7 Jun 2018 14:49:07 +0200
Subject: [PATCH 1/7] return non-zero exit status if a config file contains an
error
... which causes the config file to be skipped
Closes #199
Closes #204
Upstream-commit: e547b942ebdf58026f0b28a74b3d02a7674e38dc
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
config.c | 1 +
test/Makefile.am | 1 +
test/test-0083.sh | 14 ++++++++++++++
test/test-config.83.in | 3 +++
4 files changed, 19 insertions(+)
create mode 100755 test/test-0083.sh
create mode 100644 test/test-config.83.in
diff --git a/config.c b/config.c
index 1805a16..ec4c5fb 100644
--- a/config.c
+++ b/config.c
@@ -1820,6 +1820,7 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
message(MESS_ERROR, "found error in %s, skipping\n",
newlog->pattern ? newlog->pattern : "log config");
+ logerror = 1;
state = STATE_SKIP_CONFIG;
break;
case STATE_LOAD_SCRIPT:
diff --git a/test/Makefile.am b/test/Makefile.am
index 35ba2b9..cfe09c4 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -76,6 +76,7 @@ TEST_CASES = \
test-0075.sh \
test-0076.sh \
test-0077.sh \
+ test-0083.sh \
test-0084.sh \
test-0100.sh \
test-0101.sh
diff --git a/test/test-0083.sh b/test/test-0083.sh
new file mode 100755
index 0000000..f6cf26c
--- /dev/null
+++ b/test/test-0083.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+. ./test-common.sh
+
+cleanup 83
+
+# ------------------------------- Test 83 ------------------------------------
+preptest test.log 83 1
+
+if $RLR test-config.83 -v --force; then
+ exit 1
+else
+ exit 0
+fi
diff --git a/test/test-config.83.in b/test/test-config.83.in
new file mode 100644
index 0000000..f8a36f8
--- /dev/null
+++ b/test/test-config.83.in
@@ -0,0 +1,3 @@
+&DIR&/test.log {
+ rotate 1 # invalid comment
+}
--
2.38.1
From d6b10a7dd5946a6bce400ab87fd1adbde832c046 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Tue, 20 Apr 2021 17:41:10 +0200
Subject: [PATCH 2/7] Log if keyword is not properly separated
The man page states
Values are separated from directives by whitespace and/or an
optional =.
But logrotate does accept no separator, like
rotate7
Log those occurrences with a normal severity, as this usage is not
intended.
Upstream-commit: 2b588b5ec2e5c27bee857c4abeddafa6a9602ebc
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
config.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/config.c b/config.c
index ec4c5fb..cfbb3d1 100644
--- a/config.c
+++ b/config.c
@@ -1047,6 +1047,11 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
key = isolateWord(&start, &buf, length);
if (key == NULL)
continue;
+ if (!isspace((unsigned char)*start)) {
+ message(MESS_NORMAL, "%s:%d keyword '%s' not properly"
+ " separated, found %#x\n",
+ configFile, lineNum, key, *start);
+ }
if (!strcmp(key, "compress")) {
newlog->flags |= LOG_FLAG_COMPRESS;
} else if (!strcmp(key, "nocompress")) {
--
2.38.1
From 0881276c62ac95d803371f3f5c6cf11ffb552211 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Tue, 20 Apr 2021 17:41:12 +0200
Subject: [PATCH 3/7] Log error on keyword parse failure
isolateWord() only fails on OOM and EOF.
Upstream-commit: 326179a901b0a8d10e902cae0abab0c68d7abc98
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
config.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/config.c b/config.c
index cfbb3d1..5a774ac 100644
--- a/config.c
+++ b/config.c
@@ -1045,8 +1045,11 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
if (isalpha((unsigned char)*start)) {
free(key);
key = isolateWord(&start, &buf, length);
- if (key == NULL)
+ if (key == NULL) {
+ message(MESS_ERROR, "%s:%d failed to parse keyword\n",
+ configFile, lineNum);
continue;
+ }
if (!isspace((unsigned char)*start)) {
message(MESS_NORMAL, "%s:%d keyword '%s' not properly"
" separated, found %#x\n",
--
2.38.1
From 539b863fbd211b61614493447040cb340b53f0c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Tue, 20 Apr 2021 17:41:20 +0200
Subject: [PATCH 4/7] Fail on parse error of required option value
Fail on a parse error of a required option value of the directives
include, extension, addextension, rotate, start, minage, maxage,
shredcycles and su.
Failing is better than silently skipping a directive and running with an
undesired configuration.
Upstream-commit: 906ea11981cb1842538c4aaed395885fda693e47
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
config.c | 49 ++++++++++++++++++++++++++++++-------------------
1 file changed, 30 insertions(+), 19 deletions(-)
diff --git a/config.c b/config.c
index 5a774ac..ae7bf4b 100644
--- a/config.c
+++ b/config.c
@@ -1110,8 +1110,11 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
mode_t tmp_mode = NO_MODE;
free(key);
key = isolateLine(&start, &buf, length);
- if (key == NULL)
- continue;
+ if (key == NULL) {
+ message(MESS_ERROR, "%s:%d failed to parse su option value\n",
+ configFile, lineNum);
+ RAISE_ERROR();
+ }
rv = readModeUidGid(configFile, lineNum, key, "su",
&tmp_mode, &newlog->suUid,
@@ -1209,13 +1212,14 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
free(key);
key = isolateValue(configFile, lineNum, "shred cycles",
&start, &buf, length);
- if (key == NULL)
- continue;
+ if (key == NULL) {
+ RAISE_ERROR();
+ }
newlog->shred_cycles = strtoul(key, &chptr, 0);
if (*chptr || newlog->shred_cycles < 0) {
message(MESS_ERROR, "%s:%d bad shred cycles '%s'\n",
configFile, lineNum, key);
- goto error;
+ RAISE_ERROR();
}
} else if (!strcmp(key, "hourly")) {
newlog->criterium = ROT_HOURLY;
@@ -1250,8 +1254,9 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
free(key);
key = isolateValue(configFile, lineNum, "rotate count", &start,
&buf, length);
- if (key == NULL)
- continue;
+ if (key == NULL) {
+ RAISE_ERROR();
+ }
newlog->rotateCount = strtoul(key, &chptr, 0);
if (*chptr || newlog->rotateCount < 0) {
message(MESS_ERROR,
@@ -1263,8 +1268,9 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
free(key);
key = isolateValue(configFile, lineNum, "start count", &start,
&buf, length);
- if (key == NULL)
- continue;
+ if (key == NULL) {
+ RAISE_ERROR();
+ }
newlog->logStart = strtoul(key, &chptr, 0);
if (*chptr || newlog->logStart < 0) {
message(MESS_ERROR, "%s:%d bad start count '%s'\n",
@@ -1275,8 +1281,9 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
free(key);
key = isolateValue(configFile, lineNum, "minage count", &start,
&buf, length);
- if (key == NULL)
- continue;
+ if (key == NULL) {
+ RAISE_ERROR();
+ }
newlog->rotateMinAge = strtoul(key, &chptr, 0);
if (*chptr || newlog->rotateMinAge < 0) {
message(MESS_ERROR, "%s:%d bad minimum age '%s'\n",
@@ -1287,8 +1294,9 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
free(key);
key = isolateValue(configFile, lineNum, "maxage count", &start,
&buf, length);
- if (key == NULL)
- continue;
+ if (key == NULL) {
+ RAISE_ERROR();
+ }
newlog->rotateAge = strtoul(key, &chptr, 0);
if (*chptr || newlog->rotateAge < 0) {
message(MESS_ERROR, "%s:%d bad maximum age '%s'\n",
@@ -1443,8 +1451,9 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
free(key);
key = isolateValue(configFile, lineNum, "include", &start,
&buf, length);
- if (key == NULL)
- continue;
+ if (key == NULL) {
+ RAISE_ERROR();
+ }
message(MESS_DEBUG, "including %s\n", key);
if (recursion_depth >= MAX_NESTING) {
message(MESS_ERROR, "%s:%d include nesting too deep\n",
@@ -1473,8 +1482,9 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
free(key);
key = isolateValue(configFile, lineNum, "extension name", &start,
&buf, length);
- if (key == NULL)
- continue;
+ if (key == NULL) {
+ RAISE_ERROR();
+ }
freeLogItem (extension);
newlog->extension = key;
key = NULL;
@@ -1484,8 +1494,9 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
free(key);
key = isolateValue(configFile, lineNum, "addextension name", &start,
&buf, length);
- if (key == NULL)
- continue;
+ if (key == NULL) {
+ RAISE_ERROR();
+ }
freeLogItem (addextension);
newlog->addextension = key;
key = NULL;
--
2.38.1
From bf20b227b45b232eec9b659839d7ae20604f5de3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Mon, 26 Jul 2021 19:35:00 +0200
Subject: [PATCH 5/7] Do not warn on key value pair separated by only an equal
sign
Do not warn if a configuration directive is specified with the key and
value separated by just an equal sign, like:
size=+2048k
The warning is intended for the usage of:
size2048k
Fixes: 2b588b5e ("Log if keyword is not properly separated")
Fixes: #410
Upstream-commit: a98c38bc867ec59e00625b48262bb3334c8f5728
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
config.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/config.c b/config.c
index ae7bf4b..569104d 100644
--- a/config.c
+++ b/config.c
@@ -1050,7 +1050,7 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
configFile, lineNum);
continue;
}
- if (!isspace((unsigned char)*start)) {
+ if (!isspace((unsigned char)*start) && *start != '=') {
message(MESS_NORMAL, "%s:%d keyword '%s' not properly"
" separated, found %#x\n",
configFile, lineNum, key, *start);
--
2.38.1
From 07faa84dc2e31002b0212c0b57669595ef9be99d Mon Sep 17 00:00:00 2001
From: Felix Wilhelm <fwilhelm@google.com>
Date: Thu, 21 Oct 2021 09:47:57 +0000
Subject: [PATCH 6/7] config.c: enforce stricter parsing of config files
Abort parsing of config files that contain invalid lines.
This makes it harder to abuse logrotate for privilege escalation
attacks where an attacker can partially control a privileged file write.
Upstream-commit: 124e4ca6532b0fe823fa2ec145294547b3aaeb4b
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
config.c | 7 ++++---
test/Makefile.am | 4 +++-
test/test-0102.sh | 16 ++++++++++++++++
test/test-0103.sh | 16 ++++++++++++++++
test/test-config.102.in | 10 ++++++++++
test/test-config.103.in | 12 ++++++++++++
6 files changed, 61 insertions(+), 4 deletions(-)
create mode 100755 test/test-0102.sh
create mode 100755 test/test-0103.sh
create mode 100644 test/test-config.102.in
create mode 100644 test/test-config.103.in
diff --git a/config.c b/config.c
index 569104d..36765be 100644
--- a/config.c
+++ b/config.c
@@ -1048,12 +1048,13 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
if (key == NULL) {
message(MESS_ERROR, "%s:%d failed to parse keyword\n",
configFile, lineNum);
- continue;
+ RAISE_ERROR();
}
if (!isspace((unsigned char)*start) && *start != '=') {
- message(MESS_NORMAL, "%s:%d keyword '%s' not properly"
+ message(MESS_ERROR, "%s:%d keyword '%s' not properly"
" separated, found %#x\n",
configFile, lineNum, key, *start);
+ RAISE_ERROR();
}
if (!strcmp(key, "compress")) {
newlog->flags |= LOG_FLAG_COMPRESS;
@@ -1805,7 +1806,7 @@ static int readConfigFile(const char *configFile, struct logInfo *defConfig)
message(MESS_ERROR, "%s:%d lines must begin with a keyword "
"or a filename (possibly in double quotes)\n",
configFile, lineNum);
- state = STATE_SKIP_LINE;
+ RAISE_ERROR();
}
break;
case STATE_SKIP_LINE:
diff --git a/test/Makefile.am b/test/Makefile.am
index cfe09c4..255c1f7 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -79,7 +79,9 @@ TEST_CASES = \
test-0083.sh \
test-0084.sh \
test-0100.sh \
- test-0101.sh
+ test-0101.sh \
+ test-0102.sh \
+ test-0103.sh
EXTRA_DIST = \
compress \
diff --git a/test/test-0102.sh b/test/test-0102.sh
new file mode 100755
index 0000000..d2550a5
--- /dev/null
+++ b/test/test-0102.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+. ./test-common.sh
+
+cleanup 102
+
+# ------------------------------- Test 102 ------------------------------------
+# test invalid config file with binary content
+preptest test.log 102 1
+
+$RLR test-config.102 --force
+
+if [ $? -eq 0 ]; then
+ echo "No error, but there should be one."
+ exit 3
+fi
diff --git a/test/test-0103.sh b/test/test-0103.sh
new file mode 100755
index 0000000..bccd8ed
--- /dev/null
+++ b/test/test-0103.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+. ./test-common.sh
+
+cleanup 103
+
+# ------------------------------- Test 103 ------------------------------------
+# test invalid config file with unknown keywords
+preptest test.log 103 1
+
+$RLR test-config.103 --force
+
+if [ $? -eq 0 ]; then
+ echo "No error, but there should be one."
+ exit 3
+fi
diff --git a/test/test-config.102.in b/test/test-config.102.in
new file mode 100644
index 0000000..cbca4c4
--- /dev/null
+++ b/test/test-config.102.in
@@ -0,0 +1,10 @@
+ELF
+
+&DIR&/test.log {
+ daily
+ size=0
+
+firstaction
+ /bin/sh -c "echo test123"
+ endscript
+}
diff --git a/test/test-config.103.in b/test/test-config.103.in
new file mode 100644
index 0000000..ef4d19c
--- /dev/null
+++ b/test/test-config.103.in
@@ -0,0 +1,12 @@
+random noise
+a b c d
+a::x
+
+&DIR&/test.log {
+ daily
+ size=0
+
+firstaction
+ /bin/sh -c "echo test123"
+ endscript
+}
--
2.38.1
From 88870bf2d84f65d0f2633bb32b7dc696be51d202 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Mon, 13 Dec 2021 21:47:16 +0100
Subject: [PATCH 7/7] Add more testcases for stricter configuration parsing
Upstream-commit: 9cbc22b91caff6cfbd1378737c62276bd9ffe3e7
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
test/Makefile.am | 4 +++-
test/test-0102.sh | 5 +++++
test/test-0103.sh | 5 +++++
test/test-0104.sh | 19 +++++++++++++++++++
test/test-0105.sh | 25 +++++++++++++++++++++++++
test/test-config.104.in | 8 ++++++++
test/test-config.105.in | 8 ++++++++
7 files changed, 73 insertions(+), 1 deletion(-)
create mode 100755 test/test-0104.sh
create mode 100755 test/test-0105.sh
create mode 100644 test/test-config.104.in
create mode 100644 test/test-config.105.in
diff --git a/test/Makefile.am b/test/Makefile.am
index 255c1f7..a489a76 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -81,7 +81,9 @@ TEST_CASES = \
test-0100.sh \
test-0101.sh \
test-0102.sh \
- test-0103.sh
+ test-0103.sh \
+ test-0104.sh \
+ test-0105.sh
EXTRA_DIST = \
compress \
diff --git a/test/test-0102.sh b/test/test-0102.sh
index d2550a5..367bde9 100755
--- a/test/test-0102.sh
+++ b/test/test-0102.sh
@@ -14,3 +14,8 @@ if [ $? -eq 0 ]; then
echo "No error, but there should be one."
exit 3
fi
+
+checkoutput <<EOF
+test.log 0 zero
+test.log.1 0 first
+EOF
diff --git a/test/test-0103.sh b/test/test-0103.sh
index bccd8ed..32a3c19 100755
--- a/test/test-0103.sh
+++ b/test/test-0103.sh
@@ -14,3 +14,8 @@ if [ $? -eq 0 ]; then
echo "No error, but there should be one."
exit 3
fi
+
+checkoutput <<EOF
+test.log 0 zero
+test.log.1 0 first
+EOF
diff --git a/test/test-0104.sh b/test/test-0104.sh
new file mode 100755
index 0000000..e3c0009
--- /dev/null
+++ b/test/test-0104.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+. ./test-common.sh
+
+cleanup 104
+
+# ------------------------------- Test 104 ------------------------------------
+# test config with unknown (new?) keyword
+preptest test1.log 104 1
+preptest test2.log 104 1
+
+$RLR test-config.104 --force || exit 23
+
+checkoutput <<EOF
+test1.log 0
+test1.log.1 0 zero
+test2.log 0
+test2.log.1 0 zero
+EOF
diff --git a/test/test-0105.sh b/test/test-0105.sh
new file mode 100755
index 0000000..b51e9be
--- /dev/null
+++ b/test/test-0105.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+. ./test-common.sh
+
+cleanup 105
+
+# ------------------------------- Test 105 ------------------------------------
+# test config with garbage keyword bails out
+preptest test1.log 105 1
+preptest test2.log 105 1
+
+$RLR test-config.105 --force
+
+if [ $? -eq 0 ]; then
+ echo "No error, but there should be one."
+ exit 3
+fi
+
+
+checkoutput <<EOF
+test1.log 0 zero
+test1.log.1 0 first
+test2.log 0
+test2.log.1 0 zero
+EOF
diff --git a/test/test-config.104.in b/test/test-config.104.in
new file mode 100644
index 0000000..988d902
--- /dev/null
+++ b/test/test-config.104.in
@@ -0,0 +1,8 @@
+&DIR&/test1.log {
+ newkeyword
+ rotate 1
+}
+
+&DIR&/test2.log {
+ rotate 1
+}
diff --git a/test/test-config.105.in b/test/test-config.105.in
new file mode 100644
index 0000000..bfab9b9
--- /dev/null
+++ b/test/test-config.105.in
@@ -0,0 +1,8 @@
+&DIR&/test1.log {
+ g@rbag€[]+#*
+ rotate 1
+}
+
+&DIR&/test2.log {
+ rotate 1
+}
--
2.38.1
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