CVE-2009-0845

Impact

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.

Affected products

Weakness classification

References

• NVD record
• CVE.org record
• http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402
• http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
• http://secunia.com/advisories/34347
• http://secunia.com/advisories/34594
• http://secunia.com/advisories/34617
• http://secunia.com/advisories/34622
• http://secunia.com/advisories/34628
• http://secunia.com/advisories/34630
• http://secunia.com/advisories/34637
• http://secunia.com/advisories/34640
• http://secunia.com/advisories/34734
• http://secunia.com/advisories/35074
• http://security.gentoo.org/glsa/glsa-200904-09.xml
• http://src.mit.edu/fisheye/browse/krb5/trunk/src/lib/gssapi/spnego/spnego_mech.c?r1=21875&r2=22084
• http://src.mit.edu/fisheye/changelog/krb5/?cs=22084
• http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1
• http://support.apple.com/kb/HT3549
• http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm
• http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html
• http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html
• http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt
• http://wiki.rpath.com/Advisories:rPSA-2009-0058
• http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058
• http://www-01.ibm.com/support/docview.wss?uid=swg21396120
• http://www.kb.cert.org/vuls/id/662091