[SA18301] rxvt-unicode TTY Device Insecure Permissions Vulnerability

TITLE:
rxvt-unicode TTY Device Insecure Permissions Vulnerability

SECUNIA ADVISORY ID:
SA18301

VERIFY ADVISORY:
http://secunia.com/advisories/18301/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
Local system

SOFTWARE:
rxvt-unicode 5.x
http://secunia.com/product/4777/
rxvt-unicode 6.x
http://secunia.com/product/6746/

DESCRIPTION:
A vulnerability has been reported in rxvt-unicode, which potentially
can be exploited by malicious, local users to bypass certain security
restrictions.

The vulnerability is caused due to insecure permissions
(world-readable and world-writable) being set on certain TTY devices.
This can potentially be exploited by malicious users to read from or
write to the devices.

The vulnerability has been reported in versions prior to 6.3 and only
affect systems which uses non-unix PTYS (e.g. most BSDs).

SOLUTION:
Update to version 6.3.
http://dist.schmorp.de/rxvt-unicode/

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Ryan Beasley.

ORIGINAL ADVISORY:
http://dist.schmorp.de/rxvt-unicode/Changes

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

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http://secunia.com/about_secunia_advisories/

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