Code Injection in GNU C Library (glibc) - CVE-2011-2702
Published: February 13, 2023 / Updated: June 3, 2025
Vulnerability identifier: #VU110113
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-2702
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
Integer signedness error in Glibc before 2.13 and eglibc before 2.13, when using Supplemental Streaming SIMD Extensions 3 (SSSE3) optimization, allows context-dependent attackers to execute arbitrary code via a negative length parameter to (1) memcpy-ssse3-rep.S, (2) memcpy-ssse3.S, or (3) memset-sse2.S in sysdeps/i386/i686/multiarch/, which triggers an out-of-bounds read, as demonstrated using the memcpy function.
Affected software
GNU C Library (glibc)
How to mitigate CVE-2011-2702
Install update from vendor's website.
GNU C Library (glibc) - update to 2.13
Links to Public Exploits and PoC-codes
External References
- http://seclists.org/oss-sec/2011/q3/153
- http://seclists.org/oss-sec/2011/q3/123
- http://www.nodefense.org/eglibc.txt
- http://xorl.wordpress.com/2011/08/06/cve-2011-2702-eglibc-and-glibc-signedness-issue/
- http://www.osvdb.org/80718
- https://bugzilla.novell.com/show_bug.cgi?id=706915
- http://www.eglibc.org/cgi-bin/viewvc.cgi/trunk/libc/ChangeLog?view=markup&pathrev=10032
- https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=a0ac24d98ace90d1ccba6a2f3e7d55600f2fdb6e