PCRE library subpattern denial of service
| pcre-library-subpattern-dos (40020) |  Low Risk |
Description:
The PCRE (Perl Compatible Regular Expressions) library is vulnerable to a denial of service, caused by the improper handling of malformed regular expressions involving a "subpattern containing a subroutine reference or named recursion" that could result in improper memory allocation. A remote attacker could exploit this vulnerability using unspecified attack vectors to cause an application linked to the vulnerable library to crash.
*CVSS:
| Base Score: | 3.5 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 2.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of PCRE (6.7 or later), available from the PCRE Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- PCRE Web site: PCRE - Perl Compatible Regular Expressions.
- Red Hat Bugzilla Bug 384781: CVE-2006-7226 pcre miscalculation of memory requirements for repeated subpattern containing a named recursion or subroutine reference.
- ASA-2007-505: PCRE security update (RHSA-2007-1068)
- BID-26727: PCRE Perl Compatible Regular Expression Subpattern Memory Allocation Denial Of Service Vulnerability
- CVE-2006-7226: Perl-Compatible Regular Expression (PCRE) library before 6.7 does not properly calculate the compiled memory allocation for regular expressions that involve a quantified subpattern containing a named recursion or subroutine reference
- MDKSA-2007:212: Updated pcre packages fix vulnerability
- MDVSA-2008:030: Updated pcre packages fix vulnerability
- RHSA-2007-1059: Important: pcre security update
- RHSA-2007-1068: Important: pcre security update
- SA28041: Avaya Products PCRE Multiple Vulnerabilities
- SUSE-SA:2008:004: php5 php4 Security Problems
Platforms Affected:
- Avaya Application Enablement Services 4.0.1
- Avaya Application Enablement Services 4.1
- Avaya Communication Manager 3.0
- Avaya Communication Manager 3.0.1
- Avaya Communication Manager 3.1
- Avaya Communication Manager 3.1.1
- Avaya Communication Manager 3.1.2
- Avaya Communication Manager 3.1.3
- Avaya Communication Manager 3.1.4
- Avaya Communication Manager 4.0
- Avaya Communication Manager 4.0.1
- Avaya Communication Manager 4.0.3
- Avaya Converged Communications Server 3.1.1
- Avaya Converged Communications Server 3.1.2
- Avaya Converged Communications Server 4.0
- Avaya Intuity Audix LX 2.0
- Avaya Message Networking 3.1
- MandrakeSoft Mandrake Linux 2007
- MandrakeSoft Mandrake Linux 2007 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 4.0
- MandrakeSoft Mandrake Multi Network Firewall 2.0
- Novell Linux Desktop 9
- Novell Linux Desktop 9 SDK
- Novell Linux POS 9
- Novell Open Enterprise Server
- Novell Open Enterprise Server
- Novell OpenSUSE 10.2
- Novell OpenSUSE 10.3
- Novell SLE SDK 10
- Novell SLE SDK 10 SP1
- Novell SUSE Linux Enterprise Desktop 10 SP1
- Novell SUSE Linux Enterprise Server 10 SP1
- Novell SUSE Linux Enterprise Server 10
- Philip Hazel PCRE prior to 6.7
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 Desktop
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 5 Client Workstation
- SuSE SuSE SLES 9
Reported:
Jul 04, 2006
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.