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TITLE:
ViRobot Linux Server Cookie Overflow Vulnerability

SECUNIA ADVISORY ID:
SA15700

VERIFY ADVISORY:
http://secunia.com/advisories/15700/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From local network

SOFTWARE:
ViRobot Linux Server 2.x
http://secunia.com/product/2048/

DESCRIPTION:
Kevin Finisterre has discovered a vulnerability in ViRobot Linux
Server, which can be exploited by malicious people to compromise a
vulnerable system.

The vulnerability is caused due to a boundary error in the setuid
cgi-bin file "addschup" when processing the received cookie and can
be exploited to insert arbitrary commands into the root user's
crontab file.

Successful exploitation makes it possible to execute commands with
root privileges, but requires the ability to connect to the server's
webadmin port.

The vulnerability has been confirmed in version 2.0. Other versions
may also be affected.

SOLUTION:
Allow only trusted users to access the server's webadmin port.

Remove the suid bits from files in "/usr/local/ViRobot/cgi-bin/".

PROVIDED AND/OR DISCOVERED BY:
Kevin Finisterre, Digital Munition

ORIGINAL ADVISORY:
http://www.digitalmunition.com/DMA[2005-0614a].txt

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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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