Vulnerability Assessment & Network Security Forums



If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.


Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200603-07] flex: Potential insecure code generation


Vulnerability Assessment Details

[GLSA-200603-07] flex: Potential insecure code generation

Vulnerability Assessment Summary
flex: Potential insecure code generation

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200603-07
(flex: Potential insecure code generation)


Chris Moore discovered a buffer overflow in a special class of
lexicographical scanners generated by flex. Only scanners generated by
grammars which use either REJECT, or rules with a "variable trailing
context" might be at risk.

Impact

A possible hacker could feed malicious input to an application making
use of an affected scanner and trigger the buffer overflow, potentially
resulting in the execution of arbitrary code.

Workaround

Avoid using vulnerable grammar in your flex scanners.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0459


Solution:
All flex users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-devel/flex-2.5.33-r1"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2006 Michel Arboi

Cables, Connectors

Discovery Bay Games Atari Arcade duo Powered
$19.99
Discovery Bay Games Atari Arcade duo Powered pictureAtari 400 Computer TESTED with 3 cartridges
$25.0
Atari 400 Computer TESTED with 3 cartridges pictureGenuine Atari Power Supply C017945 Tested
$18.99
Genuine Atari Power Supply C017945 Tested pictureATARI DUO POWERED JOYSTICK CONTROLLER FOR iPad - ENDLESS FUN
$12.95
ATARI DUO POWERED JOYSTICK CONTROLLER FOR iPad - ENDLESS FUN  picture


Discussions

No Discussions have been posted on this vulnerability.