GLSA-200708-03 : libarchive (formerly named as bsdtar): Multiple PaX Extension Header Vulnerabilities

This script is Copyright (C) 2007-2015 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-200708-03
(libarchive (formerly named as bsdtar): Multiple PaX Extension Header Vulnerabilities)

CPNI, CERT-FI, Tim Kientzle, and Colin Percival reported a buffer
overflow (CVE-2007-3641), an infinite loop (CVE-2007-3644), and a NULL
pointer dereference (CVE-2007-3645) within the processing of archives
having corrupted PaX extension headers.

Impact :

An attacker can trick a user or automated system to process an archive
with malformed PaX extension headers into execute arbitrary code, crash
an application using the library, or cause a high CPU load.

Workaround :

There is no known workaround at this time.

See also :

Solution :

All libarchive or bsdtar users should upgrade to the latest libarchive
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-arch/libarchive-2.2.4'

Risk factor :

High / CVSS Base Score : 9.3
CVSS Temporal Score : 7.3
Public Exploit Available : true

Family: Gentoo Local Security Checks

Nessus Plugin ID: 25868 (gentoo_GLSA-200708-03.nasl)

Bugtraq ID: 24885

CVE ID: CVE-2007-3641