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Last updated: 4/23/2014

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Vulnerability Summary for CVE-2009-0845

Original release date: 03/27/2009
Last revised: 08/21/2010
Source: US-CERT/NIST

Overview

The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3, when SPNEGO is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/AU:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: SECUNIA
Name: 34594
External Source: SECTRACK
Name: 1021867
External Source: BUGTRAQ
Name: 20090407 rPSA-2009-0058-1 krb5 krb5-server krb5-services krb5-test krb5-workstation
External Source: OVAL
Name: oval:org.mitre.oval:def:10044
External Source: CONFIRM
Name: http://src.mit.edu/fisheye/changelog/krb5/?cs=22084
Type: Advisory
US-CERT Vulnerability Note: CERT
Name: TA09-133A
External Source: FEDORA
Name: FEDORA-2009-2834
External Source: CONFIRM
Name: http://src.mit.edu/fisheye/browse/krb5/trunk/src/lib/gssapi/spnego/spnego_mech.c?r1=21875&r2=22084
External Source: VUPEN
Name: ADV-2009-1297
External Source: CONFIRM
Name: http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm
External Source: BID
Name: 34257
External Source: SECUNIA
Name: 34622
External Source: OVAL
Name: oval:org.mitre.oval:def:6449
External Source: APPLE
Name: APPLE-SA-2009-05-12
External Source: VUPEN
Name: ADV-2009-1057
External Source: CONFIRM
Name: http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt
External Source: MISC
Name: http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058
External Source: CONFIRM
Name: http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402
External Source: SUNALERT
Name: 256728
External Source: CONFIRM
Name: http://www-01.ibm.com/support/docview.wss?uid=swg21396120
External Source: CONFIRM
Name: http://wiki.rpath.com/Advisories:rPSA-2009-0058
External Source: MANDRIVA
Name: MDVSA-2009:082
External Source: SECUNIA
Name: 35074
Type: Advisory
External Source: SECUNIA
Name: 34617
External Source: VUPEN
Name: ADV-2009-2248
Type: Advisory
External Source: CONFIRM
Name: http://support.apple.com/kb/HT3549
External Source: SECUNIA
Name: 34640
External Source: SECUNIA
Name: 34347
Type: Advisory
External Source: REDHAT
Name: RHSA-2009:0408
External Source: BUGTRAQ
Name: 20090407 MITKRB5-SA-2009-001: multiple vulnerabilities in SPNEGO, ASN.1 decoder [CVE-2009-0844 CVE-2009-0845 CVE-2009-0847]
US-CERT Vulnerability Note: CERT-VN
Name: VU#662091
External Source: MISC
Name: http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html
External Source: SECUNIA
Name: 34637
External Source: VUPEN
Name: ADV-2009-0976
External Source: SECUNIA
Name: 34628
External Source: SECUNIA
Name: 34630
External Source: MISC
Name: http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html
External Source: VUPEN
Name: ADV-2009-1106
External Source: FEDORA
Name: FEDORA-2009-2852
External Source: SECUNIA
Name: 34734
External Source: UBUNTU
Name: USN-755-1
External Source: VUPEN
Name: ADV-2009-0847
Type: Advisory
External Source: XF
Name: kerberos-spnego-dos(49448)
External Source: GENTOO
Name: GLSA-200904-09

References to Check Content

Identifier: oval:org.mitre.oval:def:10044
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5
Identifier: oval:org.mitre.oval:def:6449
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Technical Details

Vulnerability Type (View All)