Perl UTF8 double free memory corruption denial of service

perl-utf8-dos (41996) The risk level is classified as MediumMedium Risk

Description:

Perl is vulnerable to a denial of service, caused by a double free memory corruption error. By sending a specially-crafted regular expression containing UTF8 characters, a remote attacker could exploit this vulnerability to cause a denial of service on the affected system.

Note: It may also be possible for this vulnerability to be exploited to execute arbitrary code on the system.

*CVSS:

Base Score: 5.8
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 4.5
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of Perl (5.10.0-1 or later), available from The Perl Foundation Web site. See References.

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

References:

  • Apple Web site: About the security content of Security Update 2009-001 .
  • Debian Bug report logs - #454792: double free and segfault on utf8 containing regexes.
  • IPCop Web site: IPCop 1.4.21 released .
  • perlbug #48156: regexp: unicode char causes a 'double free corruption'.
  • The Perl Foundation Web site: The Perl Directory - perl.org.
  • VMSA-2008-0013: Updated ESX packages for OpenSSL, net-snmp, perl.
  • ASA-2008-317: perl security update (RHSA-2008-0532)
  • ASA-2008-361: perl security update (RHSA-2008-0522)
  • BID-28928: Perl Unicode '\Q...\E' Quoting Construct Regular Expression Buffer Overflow Vulnerability
  • CVE-2008-1927: Double free vulnerability in Perl 5.8.8 allows context-dependent attackers to cause a denial of service (memory corruption and crash) via a crafted regular expression containing UTF8 characters. NOTE: this issue might only be present on certain operating systems.
  • DSA-1556: perl -- heap buffer overflow
  • MDVSA-2008:100: Updated perl packages fix denial of service vulnerability
  • OSVDB ID: 44588: Perl UTF8 Character Handling Double-free DoS
  • RHSA-2008-0522: Important: perl security update
  • RHSA-2008-0532: Important: perl security update
  • RHSA-2010-0602: Moderate: Red Hat Certificate System 7.3 security update
  • SA31208: IPCop update for perl
  • SA31328: Avaya Communication Manager Perl Regular Expressions Vulnerability
  • SA31467: VMware updates for OpenSSL, net-snmp, and perl
  • SA31489: VMware ESXi OpenSSL Vulnerabilities
  • SA31604: Avaya Products Perl Regular Expressions Unicode Data Buffer Overflow
  • SA33937: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SECTRACK ID: 1020253: Perl UTF8 Regex Processing Double Free Bug May Let Users Execute Arbitrary Code
  • SUSE-SR:2008:017: SUSE Security Summary Report
  • USN-700-1: Perl vulnerabilities
  • USN-700-2: Perl regression
  • VUPEN/ADV-2008-2265: Avaya Communication Manager Perl Double Free Vulnerability
  • VUPEN/ADV-2008-2361: VMware ESX Server Security Update Fixes Multiple Vulnerabilities
  • VUPEN/ADV-2008-2424: Avaya Products Perl UTF Parsing Code Execution Vulnerability
  • VUPEN/ADV-2009-0422: Apple Mac OS X Code Execution and Security Bypass Vulnerabilities

Platforms Affected:

  • Apple Mac OS X 10.4.11
  • Apple Mac OS X 10.5.6
  • Apple Mac OS X Server 10.4.11
  • Apple Mac OS X Server 10.5.6
  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 7.10
  • Canonical Ubuntu 8.04 LTS
  • Canonical Ubuntu 8.10
  • Debian Debian Linux 4.0
  • IPCop IPCop 1.4.20
  • Larry Wall Perl 5.8.8
  • MandrakeSoft Mandrake Linux 2007.1
  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • MandrakeSoft Mandrake Multi Network Firewall 2.0
  • 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 ES
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4.6.z AS
  • RedHat Enterprise Linux 4.6.z ES
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5.2.z EUS
  • VMware ESX Server 3.0.1
  • VMware ESX Server 3.0.2

Reported:

Apr 24, 2008

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