[SA14902] Sun Java JDK/SDK Jar Directory Traversal Vulnerability

---

Want a new IT Security job?

Vacant positions at Secunia:
http://secunia.com/secunia_vacancies/

---

TITLE:
Sun Java JDK/SDK Jar Directory Traversal Vulnerability

SECUNIA ADVISORY ID:
SA14902

VERIFY ADVISORY:
http://secunia.com/advisories/14902/

CRITICAL:
Less critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Sun Java SDK 1.4.x
http://secunia.com/product/1661/
Sun Java SDK 1.3.x
http://secunia.com/product/1660/
Sun Java SDK 1.2.x
http://secunia.com/product/1662/
Sun Java SDK 1.1.x
http://secunia.com/product/1663/
Sun Java JDK 1.5.x
http://secunia.com/product/4621/

DESCRIPTION:
Pluf has discovered a vulnerability in Sun Java JDK/SDK, which
potentially can be exploited by malicious people to compromise a
user's system.

The vulnerability is caused due to an input validation error when
extracting compressed ".jar" archives with the Jar utility. This
makes it possible to have files extracted to arbitrary locations
outside the specified directory using the "…/" directory traversal
sequence.

The vulnerability has been confirmed in Sun Java JDK 1.5.0_02 and Sun
Java SDK 1.4.2_08. Other versions may also be affected.

SOLUTION:
Do not extract untrusted archives.

PROVIDED AND/OR DISCOVERED BY:
Pluf

---

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.