National Cyber-Alert System
Vulnerability Summary for CVE-2001-1180
Original release date:07/10/2001
Last revised:09/05/2008
Source:
US-CERT/NIST
Overview
FreeBSD 4.3 does not properly clear shared signal handlers when executing a process, which allows local users to gain privileges by calling rfork with a shared signal handler, having the child process execute a setuid program, and sending a signal to the child.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
References to Advisories, Solutions, and Tools
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US-CERT Vulnerability Note: VU#943633
Name: VU#943633
Type: Advisory; Patch Information
External Source: BID
Name: 3007
Type: Advisory; Patch Information
External Source: BUGTRAQ
Name: 20010710 FreeBSD 4.3 local root, yet Linux and *BSD much better than Windows
Type: Advisory; Patch Information
External Source: XF
Name: bsd-rfork-signal-handlers(6829)
Type: Advisory
External Source: OSVDB
Name: 1897
External Source: CIAC
Name: L-111
External Source: FREEBSD
Name: FreeBSD-SA-01:42
