National Cyber-Alert System
Vulnerability Summary for CVE-2009-0537
Original release date:03/09/2009
Last revised:03/21/2009
Source:
US-CERT/NIST
Overview
Integer overflow in the fts_build function in fts.c in libc in (1) OpenBSD 4.4 and earlier and (2) Microsoft Interix 6.0 build 10.0.6030.0 allows context-dependent attackers to cause a denial of service (application crash) via a deep directory tree, related to the fts_level structure member, as demonstrated by (a) du, (b) rm, (c) chmod, and (d) chgrp on OpenBSD; and (e) SearchIndexer.exe on Vista Enterprise.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.9
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown
References to Advisories, Solutions, and Tools
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External Source: SECTRACK
Name: 1021818
External Source: BID
Name: 34008
External Source: BUGTRAQ
Name: 20090305 libc:fts_*():multiple vendors, Denial-of-service
External Source: CONFIRM
Name: http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c.diff?r1=1.41;r2=1.42;f=h
Type: Advisory
External Source: CONFIRM
Name: http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c
Type: Advisory
External Source: MILW0RM
Name: 8163
External Source: SREASONRES
Name: 20090304 libc:fts_*():multiple vendors, Denial-of-service