Vulnerability Details : CVE-2011-2702
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.
Vulnerability category: Execute code
Products affected by CVE-2011-2702
- cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.12.1:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.12:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:eglibc:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2011-2702
2.74%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2011-2702
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST |
CWE ids for CVE-2011-2702
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The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-2702
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https://bugzilla.novell.com/show_bug.cgi?id=706915
Bug 706915 – VUL-0: glibc jump table OOB access for negative memcpy len parameter
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http://seclists.org/oss-sec/2011/q3/153
oss-sec: Re: CVE id request: (e)glibc
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https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=a0ac24d98ace90d1ccba6a2f3e7d55600f2fdb6e
sourceware.org Git
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http://www.eglibc.org/cgi-bin/viewvc.cgi/trunk/libc/ChangeLog?view=markup&pathrev=10032
[svn] View of /trunk/libc/ChangeLog
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http://seclists.org/oss-sec/2011/q3/123
oss-sec: CVE id request: (e)glibc
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http://xorl.wordpress.com/2011/08/06/cve-2011-2702-eglibc-and-glibc-signedness-issue/
CVE-2011-2702: eglibc and glibc Signedness Issue | xorl %eax, %eaxExploit
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http://www.nodefense.org/eglibc.txt
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