FreeBSD libarchive pax buffer overflow

freebsd-libarchive-pax-bo (35405) The risk level is classified as HighHigh Risk

Description:

FreeBSD libarchive is vulnerable to a buffer overflow. By persuading a victim to open a specially-crafted archive file with a malicious pax header, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

Platforms Affected:

  • Debian, Debian Linux 4.0
  • FreeBSD, FreeBSD 5.5
  • FreeBSD, FreeBSD 6.1
  • FreeBSD, FreeBSD 6.2
  • FreeBSD, libarchive 2.2.3
  • Gentoo, Linux
  • SuSE, SuSE Linux

Remedy:

Refer to FreeBSD-SA-07:05.libarchive for patch, upgrade, or suggested workaround information. See References.

For Gentoo Linux (libarchive):
Refer to GLSA 200708-03 for patch, upgrade, or suggested workaround information. See References.

For SUSE Linux:
Refer to SUSE-SR:2007:015 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Gain Access

References:

  • FreeBSD-SA-07:05.libarchive , Errors handling corrupt tar files in libarchive(3) at http://security.freebsd.org/advisories/FreeBSD-SA-07:05.libarchive.asc.
  • libarchive Web page, libarchive, bsdtar, pkg_add at http://people.freebsd.org/~kientzle/libarchive/.
  • BID-24885: 'libarchive' Multiple Remote Vulnerabilities
  • CVE-2007-3641: archive_read_support_format_tar.c in libarchive before 2.2.4 does not properly compute the length of a certain buffer when processing a malformed pax extension header, which allows user-assisted remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted (1) PAX or (2) TAR archive that triggers a buffer overflow.
  • DSA-1455: libarchive -- denial of service
  • GLSA-200708-03: libarchive (formerly named as bsdtar): Multiple PaX Extension Header Vulnerabilities
  • SA26050: libarchive pax Extension Header Denial of Service and Buffer Overflow
  • SECTRACK ID: 1018379: libarchive Tar/Pax Processing Bugs Let Remote Users Deny Service or Execute Arbitrary Code
  • SUSE-SR:2007:015: SUSE Security Summary Report
  • VUPEN/ADV-2007-2521: Libarchive Pax Extension Header Processing Code Execution and DoS Vulnerabilities

Reported:

Jul 12, 2007

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

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