PCRE unmatched bracket and parentheses search denial of service
| pcre-unmatched-dos (38275) |  Low Risk |
Description:
The PCRE (Perl Compatible Regular Expressions) library is vulnerable to a denial of service, caused by an error in multiple routines when searching for unmatched brackets and parentheses. 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: | 4.3 |
| Access Vector: | Network |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 3.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of PCRE (7.4 or later), available from the PCRE Web site. See References.
For Mac OS X:
Apply Security Update 2008-002, available from the Apple Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- Apple Web site: About Security Update 2007-009.
- Apple Web site: About Security Update 2007-009 v1.1.
- Apple Web site: About Security Update 2008-002.
- BugTraq Mailing List, Mon Dec 17 2007 - 15:47:29 CST: Apple OS X Software Update Remote Command Execution.
- PCRE Web site: PCRE - Perl Compatible Regular Expressions.
- BID-26346: PCRE Regular Expression Library Multiple Security Vulnerabilities
- CVE-2007-1662: Perl-Compatible Regular Expression (PCRE) library before 7.3 reads past the end of the string when searching for unmatched brackets and parentheses, which allows context-dependent attackers to cause a denial of service (crash), possibly involving forward references.
- DSA-1399: pcre3 -- several vulnerabilities
- DSA-1570: kazehakase -- various
- GLSA-200711-30: PCRE: Multiple vulnerabilities
- GLSA-200801-02: R: Multiple vulnerabilities
- GLSA-200801-18: Kazehakase: Multiple vulnerabilities
- GLSA-200801-19: GOffice: Multiple vulnerabilities
- MDKSA-2007:211: Updated pcre packages fix vulnerability
- SA27543: PCRE Multiple Vulnerabilities
- SA28136: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
- SA28414: R PCRE Multiple Vulnerabilities
- SA29420: Mac OS X Security Update Fixes Multiple Vulnerabilities
- SA30155: Chicken PCRE Buffer Overflow Vulnerability
- USN-547-1: PCRE vulnerabilities
- VUPEN/ADV-2007-3725: PCRE Regular Expression Handling Code Execution and Denial of Service
- VUPEN/ADV-2007-3790: GLib Security Update Fixes PCRE Code Execution and Denial of Service
- VUPEN/ADV-2007-4238: Apple Mac OS X Code Execution and Information Disclosure Vulnerabilities
- VUPEN/ADV-2008-0924: Apple Mac OS X Command Execution and Security Bypass Issues
Platforms Affected:
- Apple Mac OS X 10.4.11
- Apple Mac OS X 10.5.2
- Apple Mac OS X Server 10.4.11
- Apple Mac OS X Server 10.5.2
- 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
- MandrakeSoft Mandrake Linux 2007.1
- MandrakeSoft Mandrake Linux 2007.1 X86_64
- Philip Hazel PCRE 7.3 and prior
Reported:
Nov 05, 2007
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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.