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.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35405
http://www.vupen.com/english/advisories/2007/2521
http://www.securitytracker.com/id?1018379
http://www.securityfocus.com/bid/24885
http://www.novell.com/linux/security/advisories/2007_15_sr.html
http://www.debian.org/security/2008/dsa-1455
http://security.gentoo.org/glsa/glsa-200708-03.xml
http://security.freebsd.org/patches/SA-07:05/libarchive.patch
http://security.freebsd.org/advisories/FreeBSD-SA-07:05.libarchive.asc
http://secunia.com/advisories/28377
http://secunia.com/advisories/26355
http://secunia.com/advisories/26062
http://secunia.com/advisories/26050