PCRE character class buffer overflow

pcre-characterclass-bo (40505) The risk level is classified as HighHigh Risk

Description:

The PCRE (Perl Compatible Regular Expressions) library is vulnerable to a buffer overflow, caused by improper bounds checking when processing character classes. By sending an overly long character class containing codepoints larger than 255, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application using the affected library to crash.

Platforms Affected:

  • Canonical, Ubuntu 6.06 LTS
  • Canonical, Ubuntu 6.10
  • Canonical, Ubuntu 7.04
  • Canonical, Ubuntu 7.10
  • Debian, Debian Linux 3.1
  • Debian, Debian Linux 4.0
  • Mandriva, Linux 2007.1
  • Mandriva, Linux 2007.1 X86_64
  • Mandriva, Linux 2008.0 X86_64
  • Mandriva, Linux 2008.0
  • Philip Hazel, PCRE prior to 7.6

Remedy:

Upgrade to the latest version of PCRE (7.6 or later), available from the PCRE Web site. See References.

Consequences:

Gain Access

References:

Reported:

Jan 28, 2008

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