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

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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