National Cyber-Alert System
Vulnerability Summary for CVE-2009-1885
Original release date:08/11/2009
Last revised:08/18/2009
Source:
US-CERT/NIST
Overview
Stack consumption vulnerability in validators/DTD/DTDScanner.cpp in Apache Xerces C++ 2.7.0 and 2.8.0 allows context-dependent attackers to cause a denial of service (application crash) via vectors involving nested parentheses and invalid byte values in "simply nested DTD structures," as demonstrated by the Codenomicon XML fuzzing framework.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
2.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown
- Official Statement from Red Hat (08/12/2009)
-
Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2009-1885
The Red Hat Security Response Team has rated this issue as having low security impact, a future xerces-c packages update in Red Hat Enterprise MRG 1.1 may address this flaw. More information regarding issue severity can be found here: http://www.redhat.com/security/updates/classification/
References to Advisories, Solutions, and Tools
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External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=515515
Type: Patch Information
External Source: VUPEN
Name: ADV-2009-2196
Type: Advisory; Patch Information
External Source: XF
Name: xerces-c-dtd-dos(52321)
External Source: MISC
Name: http://www.networkworld.com/columnists/2009/080509-xml-flaw.html
External Source: MISC
Name: http://www.codenomicon.com/labs/xml/
External Source: MISC
Name: http://www.cert.fi/en/reports/2009/vulnerability2009085.html
External Source: CONFIRM
Name: http://svn.apache.org/viewvc?view=rev&revision=781488
External Source: CONFIRM
Name: http://svn.apache.org/viewvc/xerces/c/trunk/src/xercesc/validators/DTD/DTDScanner.cpp?r1=781488&r2=781487&pathrev=781488&view=patch
External Source: SECUNIA
Name: 36201
Type: Advisory