eSecurityOnline Security Advisory 4198 - Sun Solaris cachefsd mou nt file buffer overflow vulnerability

[researchteam5 () esecurityonline com]

eSO Security Advisory:  4198  
Discovery Date:         October 29, 2001 
ID:                     eSO:4198 
Title:                  Sun Solaris cachefsd mount file buffer
                        overflow vulnerability 
Impact:                 Local attackers can gain root privileges
Affected Technology:    Solaris 2.6, 7, 8 SPARC and x86 
Vendor Status:          Vendor notified 
Discovered By:          Kevin Kotas of the eSecurityOnline Research
                        and Development Team 
Technical Contributor:  Richard Johnson of the eSecurityOnline
                        Research and Development Team 
CVE Reference:          CAN-2002-0084 

Advisory Location:
http://www.eSecurityOnline.com/advisories/eSO4198.asp 

Description:
Sun Solaris cachefsd is vulnerable to a flaw that can allow attackers
to execute arbitrary code. The problem is due to insufficient bounds
checking on mounts that are supplied by a user. An attacker can create
a file and have cachefsd process it to gain root privileges.  

Technical Recommendation:
As a workaround solution, ensure RPC services are blocked at the 
firewall. Otherwise, disable cachefsd.  

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