Perl Unicode regular expressions buffer overflow

perl-unicode-bo (38270) The risk level is classified as HighHigh Risk

Description:

The Perl regular expression engine is vulnerable to a buffer overflow, caused by improper handling of Unicode encoded data. By passing specially-crafted Unicode data to a regular expression using unspecified attack vectors, a remote attacker could overflow a buffer and execute arbitrary code on the system with the privileges of the Perl application.

*CVSS:

Base Score: 6.8
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 5
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest Development Release of Perl (5.9.5 or later), available from the Perl Web site. See References.

Refer to VMSA-2008-0001 for patch, upgrade, or suggested workaround information, available from the VMware Security-announce Mailing List, Mon Jan 7 17:46:23 PST 2008. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

Platforms Affected:

  • Apple Mac OS X 10.4.11
  • Apple Mac OS X 10.5.1
  • Apple Mac OS X Server 10.4.11
  • Apple Mac OS X Server 10.5.1
  • 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
  • Gentoo Linux
  • IBM AIX 5.2
  • IBM AIX 5.3
  • IBM AIX 6.1
  • IPCop IPCop 1.4.20
  • Larry Wall Perl 5.8.8 and prior
  • MandrakeSoft Mandrake Linux 2007 X86_64
  • MandrakeSoft Mandrake Linux 2007
  • MandrakeSoft Mandrake Linux 2007.1
  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Multi Network Firewall 2.0
  • OpenPKG OpenPKG CURRENT
  • RedHat Application Stack v1 for EL AS 4
  • RedHat Application Stack v1 for EL ES 4
  • RedHat Certificate System 7.3
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4.5.z AS
  • RedHat Enterprise Linux 4.5.z ES
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5
  • Sun Solaris 10 SPARC
  • Sun Solaris 10 x86
  • SUSE SuSE Linux
  • VMware ESX Server 3.0.1
  • VMware ESX Server 3.0.2

Reported:

Nov 05, 2007

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