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

This script is Copyright (C) 2006-2016 Tenable Network Security, Inc.

Synopsis :

The remote Gentoo host is missing one or more security-related

Description :

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 :

An attacker 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.

See also :

Solution :

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

Risk factor :

High / CVSS Base Score : 7.5
CVSS Temporal Score : 5.5
Public Exploit Available : false

Family: Gentoo Local Security Checks

Nessus Plugin ID: 21045 (gentoo_GLSA-200603-07.nasl)

Bugtraq ID:

CVE ID: CVE-2006-0459

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