eSecurityOnline Security Advisory 3761 - Sun Solaris lbxproxy dis play name buffer overflow vulnerability

[researchteam5 () esecurityonline com]

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  

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