CVE-2011-2702

MEDIUM

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.

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;a=commit;h=a0ac24d98ace90d1ccba6a2f3e7d55600f2fdb6e

Details

Source: MITRE

Published: 2014-10-27

Updated: 2014-10-31

Type: CWE-94

Risk Information

CVSS v2.0

Base Score: 6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM