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>> PCRE Regular Expression Handling Code Execution and Denial of Service

Title : PCRE Regular Expression Handling Code Execution and Denial of Service
VUPEN ID : VUPEN/ADV-2007-3725
CVE ID : CVE-2005-4872 - CVE-2006-7227 - CVE-2006-7228 - CVE-2007-1659 - CVE-2007-1660 - CVE-2007-1661 - CVE-2007-1662 - CVE-2007-4766 - CVE-2007-4767 - CVE-2007-4768
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-11-06


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format  Receive VUPEN Security notifications by SMS 

Multiple vulnerabilities have been identified in PCRE (Perl Compatible Regular Expressions), which could be exploited by attackers to cause a denial of service or compromise a vulnerable system. These issues are caused by heap overflow and infinite loop errors when processing specially crafted regular expressions, which could be exploited by attackers to crash an application linked against a vulnerable library or execute arbitrary code.

Affected Products

PCRE versions 6.x
PCRE versions 7.x

Solution

Upgrade to PCRE version 7.4 :
ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/

References

http://www.vupen.com/english/advisories/2007/3725
http://lists.debian.org/debian-security-announce/debian-security-announce-2007/msg00177.html

Credits

Vulnerabilities reported by Tavis Ormandy (Google Security Team).

ChangeLog

2007-11-06 : Initial release

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