CVE-2006-0459 Information

Description

flex.skl in Will Estes and John Millaway Fast Lexical Analyzer Generator (flex) before 2.5.33 does not allocate enough memory for grammars containing (1) REJECT statements or (2) trailing context rules which causes flex to generate code that contains a buffer overflow that might allow context-dependent attackers to execute arbitrary code.

Reference

http://prdownloads.sourceforge.net/flex/flex-2.5.33.tar.bz2?download http://secunia.com/advisories/19071 http://secunia.com/advisories/19126 http://secunia.com/advisories/19228 http://secunia.com/advisories/19424 http://securityreason.com/securityalert/570 http://sourceforge.net/mailarchive/forum.php?thread_name=20060223020346.GA1123140tabitha.home.tldz.org&forum_name=flex-announce http://www.gentoo.org/security/en/glsa/glsa-200603-07.xml http://www.osvdb.org/23440 http://www.securityfocus.com/bid/16896 http://www.us.debian.org/security/2006/dsa-1020 http://www.vupen.com/english/advisories/2006/0770 https://exchange.xforce.ibmcloud.com/vulnerabilities/24995 https://usn.ubuntu.com/260-1/