logrotate: fix for CVE-2011-1548
If a logfile is a symlink, it may be read when being compressed, being copied (copy, copytruncate) or mailed. Secure data (eg. password files) may be exposed. Portback nofollow.patch from: http://logrotate.sourcearchive.com/downloads/3.8.1-5/logrotate_3.8.1-5.debian.tar.gz (From OE-Core rev: d0e3fc1b28fc16200adbe690aa27124041036ba3) Signed-off-by: Wenzong Fan <wenzong.fan@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Upstream-Status: Backport
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logrotate: fix for CVE-2011-1548
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If a logfile is a symlink, it may be read when being compressed, being
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copied (copy, copytruncate) or mailed. Secure data (eg. password files)
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may be exposed.
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Portback nofollow.patch from:
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http://logrotate.sourcearchive.com/downloads/3.8.1-5/logrotate_3.8.1-5.debian.tar.gz
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Signed-off-by: Wenzong Fan <wenzong.fan@windriver.com>
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---
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--- a/logrotate.c 2012-09-06 13:25:08.000000000 +0800
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+++ b/logrotate.c 2012-09-06 13:35:57.000000000 +0800
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@@ -390,7 +390,7 @@
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compressedName = alloca(strlen(name) + strlen(log->compress_ext) + 2);
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sprintf(compressedName, "%s%s", name, log->compress_ext);
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- if ((inFile = open(name, O_RDWR)) < 0) {
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+ if ((inFile = open(name, O_RDWR | O_NOFOLLOW)) < 0) {
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message(MESS_ERROR, "unable to open %s for compression\n", name);
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return 1;
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}
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@@ -470,7 +470,7 @@
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char *mailArgv[] = { mailCommand, "-s", subject, address, NULL };
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int rc = 0;
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- if ((mailInput = open(logFile, O_RDONLY)) < 0) {
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+ if ((mailInput = open(logFile, O_RDONLY | O_NOFOLLOW)) < 0) {
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message(MESS_ERROR, "failed to open %s for mailing: %s\n", logFile,
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strerror(errno));
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return 1;
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@@ -561,7 +561,7 @@
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message(MESS_DEBUG, "copying %s to %s\n", currLog, saveLog);
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if (!debug) {
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- if ((fdcurr = open(currLog, (flags & LOG_FLAG_COPY) ? O_RDONLY : O_RDWR)) < 0) {
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+ if ((fdcurr = open(currLog, ((flags & LOG_FLAG_COPY) ? O_RDONLY : O_RDWR) | O_NOFOLLOW)) < 0) {
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message(MESS_ERROR, "error opening %s: %s\n", currLog,
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strerror(errno));
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return 1;
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@ -12,6 +12,7 @@ SRC_URI = "https://fedorahosted.org/releases/l/o/logrotate/logrotate-${PV}.tar.g
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file://act-as-mv-when-rotate.patch \
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file://disable-check-different-filesystems.patch \
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file://update-the-manual.patch \
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file://logrotate-CVE-2011-1548.patch \
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"
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SRC_URI[md5sum] = "bd2e20d8dc644291b08f9215397d28a5"
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