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OpenServer auditsh/atcronsh/termsh Buffer Overflow Vulnerabilities
Secunia Advisory: SA14892
Release Date: 2005-04-08
Last Update: 2006-01-04
Popularity: 5,684 views

Critical:
Less critical
Impact: Privilege escalation
Where: Local system
Solution Status: Vendor Patch

OS:SCO OpenServer 5.x

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CVE reference:CVE-2005-0351


Description:
Joel Soderberg and Christer Oberg have reported some vulnerabilities in SCO OpenServer, which potentially can be exploited by malicious, local users to gain escalated privileges.

The vulnerabilities are caused due to boundary errors within the auditsh, atcronsh, and termsh programs when handling the HOME environment variable and certain command line arguments. This can be exploited to cause a buffer overflow via an overly long string in the HOME environment variable or via overly long command line arguments.

Solution:
Apply patches.

OpenServer 5.0.6 (requires oss646c or later):
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.15/VOL.000.000
3b47d83661354009a73acbd2979c4d0c

OpenServer 5.0.7:
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.15/VOL.000.000
3b47d83661354009a73acbd2979c4d0c

Provided and/or discovered by:
Joel Soderberg and Christer Oberg

Changelog:
2006-01-04: Updated "Description" section.

Original Advisory:
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.15/SCOSA-2005.15.txt


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