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CVE-2011-2939

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 201401-11
Posted Jan 20, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201401-11 - Multiple vulnerabilities have been found in Perl and Locale::Maketext Perl module, the worst of which could allow a context-dependent attacker to execute arbitrary code. Versions less than 5.16.3 are affected.

tags | advisory, arbitrary, perl, vulnerability
systems | linux, gentoo
advisories | CVE-2011-2728, CVE-2011-2939, CVE-2012-5195, CVE-2013-1667
SHA-256 | 92d8d5759a27b001185c6521fec4e8b39a433512603eecfa0564f8a319809a00
Ubuntu Security Notice USN-1643-1
Posted Nov 30, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1643-1 - It was discovered that the decode_xs function in the Encode module is vulnerable to a heap-based buffer overflow via a crafted Unicode string. An attacker could use this overflow to cause a denial of service. It was discovered that the 'new' constructor in the Digest module is vulnerable to an eval injection. An attacker could use this to execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, overflow, arbitrary
systems | linux, ubuntu
advisories | CVE-2011-2939, CVE-2011-3597, CVE-2012-5195, CVE-2012-5526, CVE-2011-2939, CVE-2011-3597, CVE-2012-5195, CVE-2012-5526
SHA-256 | 6c274eedfdb3da7dbb7671102ad6fe7a37edb74ba2b040227e902cbb757d04a1
Mandriva Linux Security Advisory 2012-008
Posted Jan 18, 2012
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2012-008 - 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 via a crafted Unicode string, which triggers a heap-based buffer overflow. Eval injection in the Digest module before 1.17 for Perl allows context-dependent attackers to execute arbitrary commands via the new constructor. The updated packages have been patched to correct these issues.

tags | advisory, denial of service, overflow, arbitrary, perl
systems | linux, mandriva
advisories | CVE-2011-2939, CVE-2011-3597
SHA-256 | 31921fc8f107ce4afda30bef36a4fdcf306d5051fd01ee828a54c2b3c8eba137
Red Hat Security Advisory 2011-1424-01
Posted Nov 3, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-1424-01 - Perl is a high-level programming language commonly used for system administration utilities and web programming. A heap-based buffer overflow flaw was found in the way Perl decoded Unicode strings. An attacker could create a malicious Unicode string that, when decoded by a Perl program, would cause the program to crash or, potentially, execute arbitrary code with the permissions of the user running the program. It was found that the "new" constructor of the Digest module used its argument as part of the string expression passed to the eval() function. An attacker could possibly use this flaw to execute arbitrary Perl code with the privileges of a Perl program that uses untrusted input as an argument to the constructor.

tags | advisory, web, overflow, arbitrary, perl
systems | linux, redhat
advisories | CVE-2011-2939, CVE-2011-3597
SHA-256 | 51a5726d1929c069fd08213b009036083f5767916bc1517d0e1b34d44276d662
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