eSO Security Advisory: 3761
Discovery Date: July 5, 2001
ID: eSO:3761
Title: Sun Solaris lbxproxy display name buffer overflow vulnerability
Impact: Local attackers can gain group root privileges
Affected Technology: Sun Solaris 8 x86
Vendor Status: Vendor notified
Discovered By: Kevin Kotas of the eSecurityOnline Research
and Development Team
CVE Reference: CAN-2002-0090

Advisory Location:
http://www.eSecurityOnline.com/advisories/eSO3761.asp

Description:
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.

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

chmod -s /usr/openwin/bin/lbxproxy

Copyright 2002 eSecurityOnline LLC. All rights reserved.

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