[UNIX] Sun Solaris lbxproxy Display Name Buffer Overflow Vulnerability

From: support@securiteam.com
Date: 04/30/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Tue, 30 Apr 2002 22:18:08 +0200 (CEST)

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  Sun Solaris lbxproxy Display Name Buffer Overflow Vulnerability
------------------------------------------------------------------------

SUMMARY

Sun Solaris lbxproxy is vulnerable to a buffer overflow condition that can
allow an attacker to execute arbitrary code. The overflow occurs due to
insufficient bounds checking on the display command line option. A display
name can be given that, when processed, will alter program execution.

DETAILS

Vulnerable systems:
Sun Solaris 8 x86

Technical Recommendation:
As a workaround solution, remove the setgid bit from the program:

# chmod -s /usr/openwin/bin/lbxproxy

ADDITIONAL INFORMATION

The information has been provided by
<mailto:researchteam5@esecurityonline.com> researchteam5.

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