TITLE:
GNU Tar PAX Extended Headers Handling Buffer Overflow

SECUNIA ADVISORY ID:
SA18973

VERIFY ADVISORY:
http://secunia.com/advisories/18973/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
GNU Tar 1.x
http://secunia.com/product/8214/

DESCRIPTION:
A vulnerability has been reported in GNU Tar, which potentially can
be exploited by malicious people to cause a DoS (Denial of Service)
and to compromise a user's system.

The vulnerability is caused due to a boundary error within the
handling of PAX extended headers. This can be exploited to cause a
buffer overflow.

The vulnerability has been reported in version 1.15.1. Prior versions
may also be affected.

SOLUTION:
The vulnerability has been fixed in version 1.15.90 (alpha).

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://lists.gnu.org/archive/html/bug-tar/2006-02/msg00051.html

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------