CVE-2011-2702

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-10-27 · updated 2026-06-16
Weakness: CWE-94

Description

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 products

GNU Eglibc: through 2.12
GNU C Library (glibc): through 2.12.2; 2.12, 2.12.1

References

http://seclists.org/oss-sec/2011/q3/123
http://seclists.org/oss-sec/2011/q3/153
http://www.eglibc.org/cgi-bin/viewvc.cgi/trunk/libc/ChangeLog?view=markup&pathrev=10032
http://www.nodefense.org/eglibc.txt
http://www.osvdb.org/80718
http://xorl.wordpress.com/2011/08/06/cve-2011-2702-eglibc-and-glibc-signedness-issue/
https://bugzilla.novell.com/show_bug.cgi?id=706915
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=a0ac24d98ace90d1ccba6a2f3e7d55600f2fdb6e
http://seclists.org/oss-sec/2011/q3/123
http://seclists.org/oss-sec/2011/q3/153
http://www.eglibc.org/cgi-bin/viewvc.cgi/trunk/libc/ChangeLog?view=markup&pathrev=10032
http://www.nodefense.org/eglibc.txt

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