CVE-2011-2939
MEDIUM severity · CVSS 5.1 · CWE-189
5.1CVSS MEDIUM
Summary
Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)3%
AV:N/AC:H/Au:N/C:P/I:P/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: http://perl5.git.perl.org/perl.git/commitdiff/e46d973584785af1f445c4dedbee4243419cb860#patch5 ↗
Additional information
- NVD record
- http://perl5.git.perl.org/perl.git/commitdiff/e46d973584785af1f445c4dedbee4243419cb860#patch5Patch
- http://cpansearch.perl.org/src/FLORA/perl-5.14.2/pod/perldelta.pod
- http://search.cpan.org/~flora/perl-5.14.2/pod/perldelta.pod#Encode_decode_xs_n-byte_heap-overflow_%28CVE-2011-2939%29
- http://secunia.com/advisories/46172
- http://secunia.com/advisories/46989
- http://secunia.com/advisories/51457
- http://secunia.com/advisories/55314
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:008