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TITLE:
SCO UnixWare "pkgadd" Directory Traversal Privilege Escalation

SECUNIA ADVISORY ID:
SA29657

VERIFY ADVISORY:
http://secunia.com/advisories/29657/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

REVISION:
1.1 originally posted 2008-04-04

OPERATING SYSTEM:
UnixWare 7.x.x
http://secunia.com/product/136/

DESCRIPTION:
A vulnerability has been reported in SCO UnixWare, which can be
exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to the "pkgadd" command not properly
filtering a certain environment variable. This can be exploited to
add user accounts or gain escalated privileges by overwriting system
files via directory traversal sequences (e.g. "../").

This is related to:
SA29370

Successful exploitation allows gaining root privileges, but requires
that the attacker can execute arbitrary shell commands.

The vulnerability is reported in SCO UnixWare 7.1.4. Other versions
may also be affected.

SOLUTION:
Apply patches.
http://www.sco.com/support/update/download/release.php?rid=324

PROVIDED AND/OR DISCOVERED BY:
Discovered by an anonymous person and reported via iDefense Labs.

CHANGELOG:
2008-04-04: Added reference to related SA29370.

ORIGINAL ADVISORY:
iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=676

SCO:
http://www.sco.com/support/update/download/release.php?rid=324

OTHER REFERENCES:
SA29370:
http://secunia.com/advisories/29370/

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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.

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