1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200708-03 / libarchive |
| Release Date | August 08, 2007 |
| Latest Revision | August 08, 2007: 02 |
| Impact | normal |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| app-arch/libarchive | < 2.2.4 | >= 2.2.4 | All supported architectures |
Related bugreports: #184984
Multiple vulnerabilities were found in libarchive (formerly named as app-archive/bsdtar), possibly allowing for the execution of arbitrary code or a Denial of Service.
libarchive is a library for manipulating different streaming archive formats, including certain tar variants, several cpio formats, and both BSD and GNU ar variants.
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.
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.
There is no known workaround at this time.
All libarchive or bsdtar users should upgrade to the latest libarchive version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/libarchive-2.2.4" |