#VU45136 Configuration in Glibc - CVE-2011-1089
Vulnerability identifier: #VU45136
Vulnerability risk: Medium
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-16
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Glibc
Universal components / Libraries /
Libraries used by multiple products
Vendor: GNU
Description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
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.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Glibc: 1.00 - 2.12.2
External links
https://openwall.com/lists/oss-security/2011/03/04/10
https://openwall.com/lists/oss-security/2011/03/04/11
https://openwall.com/lists/oss-security/2011/03/04/12
https://openwall.com/lists/oss-security/2011/03/04/9
https://openwall.com/lists/oss-security/2011/03/05/3
https://openwall.com/lists/oss-security/2011/03/05/7
https://openwall.com/lists/oss-security/2011/03/07/9
https://openwall.com/lists/oss-security/2011/03/14/16
https://openwall.com/lists/oss-security/2011/03/14/5
https://openwall.com/lists/oss-security/2011/03/14/7
https://openwall.com/lists/oss-security/2011/03/15/6
https://openwall.com/lists/oss-security/2011/03/22/4
https://openwall.com/lists/oss-security/2011/03/22/6
https://openwall.com/lists/oss-security/2011/03/31/3
https://openwall.com/lists/oss-security/2011/03/31/4
https://openwall.com/lists/oss-security/2011/04/01/2
https://sourceware.org/bugzilla/show_bug.cgi?id=12625
https://www.mandriva.com/security/advisories?name=MDVSA-2011:178
https://www.mandriva.com/security/advisories?name=MDVSA-2011:179
https://www.redhat.com/support/errata/RHSA-2011-1526.html
https://www.securityfocus.com/bid/46740
https://bugzilla.redhat.com/show_bug.cgi?id=688980
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
