RCE in GNU Eglibc
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 class: RCE (Remote Code Execution)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.8 (Medium). Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.085 (94.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.085 · newest: 0.085 · change: 0.000
Affected products
- GNU Eglibc
- GNU Glibc — versions 2.12, 2.12.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.novell.com/show_bug.cgi
- seclists.org/oss-sec/2011/q3/123 (mailing-list)
- xorl.wordpress.com/2011/08/06/cve-2011-2702-eglibc-and-glibc-signedness-issue/ (Exploit)
- www.nodefense.org/eglibc.txt
- seclists.org/oss-sec/2011/q3/153 (mailing-list)
- sourceware.org/git/
- www.osvdb.org/80718 (vdb-entry)
- www.eglibc.org/cgi-bin/viewvc.cgi/trunk/libc/ChangeLog
Frequently asked questions
- What is CVE-2011-2702?
- CVE-2011-2702 is a vulnerability in GNU Eglibc, classified under Code Injection. Published 2014-10-27.
- Is CVE-2011-2702 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.