Explain CVE-2011-1089
The addmntent function in the GNU C Library (aka glibc or libc6) 2.13 and earlier does not report an error status for failed attempts to write to the /etc/mtab file, which makes it easier for local users to trigger corruption of this file, as demonstrated by writes from a process with a small RLIMIT_FSIZE value, a different vulnerability than CVE-2010-0296.
Affected Products: n/a
References: [{'name': '[oss-security] 20110314 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/14/5'}, {'name': '[oss-security] 20110303 Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/04/9'}, {'tags': ['x_refsource_MISC'], 'url': 'http://sourceware.org/bugzilla/show_bug.cgi?id=12625'}, {'name': '[oss-security] 20110322 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/22/6'}, {'name': '46740', 'tags': ['vdb-entry', 'x_refsource_BID'], 'url': 'http://www.securityfocus.com/bid/46740'}, {'name': '[oss-security] 20110322 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/22/4'}, {'name': '[oss-security] 20110305 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/05/7'}, {'tags': ['x_refsource_MISC'], 'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=688980'}, {'name': '[oss-security] 20110307 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/07/9'}, {'name': 'MDVSA-2011:178', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2011:178'}, {'name': '[oss-security] 20110401 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/04/01/2'}, {'name': '[oss-security] 20110304 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/04/10'}, {'name': '[oss-security] 20110314 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/14/16'}, {'name': '[oss-security] 20110331 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/31/4'}, {'name': '[oss-security] 20110304 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/04/12'}, {'name': 'MDVSA-2011:179', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2011:179'}, {'name': '[oss-security] 20110314 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/14/7'}, {'name': '[oss-security] 20110303 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/04/11'}, {'name': '[oss-security] 20110305 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/05/3'}, {'name': 'RHSA-2011:1526', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2011-1526.html'}, {'name': '[oss-security] 20110331 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/31/3'}, {'name': '[oss-security] 20110315 Re: Suid mount helpers fail to anticipate RLIMIT_FSIZE', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/03/15/6'}]
CVE State: PUBLISHED