Vulnerability Monitor

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CVE-2009-0845

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.

Published

2009-03-27T16:30:02.157

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mit	kerberos	5-1.6.3	Yes
Application	mit	kerberos_5	1.5	Yes
Application	mit	kerberos_5	1.5.1	Yes
Application	mit	kerberos_5	1.5.2	Yes
Application	mit	kerberos_5	1.5.3	Yes
Application	mit	kerberos_5	1.6	Yes
Application	mit	kerberos_5	1.6.1	Yes
Application	mit	kerberos_5	1.6.2	Yes

References

http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402 ([email protected])
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html ([email protected])
http://secunia.com/advisories/34347 Vendor Advisory ([email protected])
http://secunia.com/advisories/34594 ([email protected])
http://secunia.com/advisories/34617 ([email protected])
http://secunia.com/advisories/34622 ([email protected])
http://secunia.com/advisories/34628 ([email protected])
http://secunia.com/advisories/34630 ([email protected])
http://secunia.com/advisories/34637 ([email protected])
http://secunia.com/advisories/34640 ([email protected])
http://secunia.com/advisories/34734 ([email protected])
http://secunia.com/advisories/35074 Vendor Advisory ([email protected])
http://security.gentoo.org/glsa/glsa-200904-09.xml ([email protected])
http://src.mit.edu/fisheye/browse/krb5/trunk/src/lib/gssapi/spnego/spnego_mech.c?r1=21875&r2=22084 Exploit ([email protected])
http://src.mit.edu/fisheye/changelog/krb5/?cs=22084 Vendor Advisory ([email protected])
http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1 ([email protected])
http://support.apple.com/kb/HT3549 ([email protected])
http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm ([email protected])
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html ([email protected])
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html ([email protected])
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt ([email protected])
http://wiki.rpath.com/Advisories:rPSA-2009-0058 ([email protected])
http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058 ([email protected])
http://www-01.ibm.com/support/docview.wss?uid=swg21396120 ([email protected])
http://www.kb.cert.org/vuls/id/662091 US Government Resource ([email protected])
http://www.mandriva.com/security/advisories?name=MDVSA-2009:082 ([email protected])
http://www.redhat.com/support/errata/RHSA-2009-0408.html ([email protected])
http://www.securityfocus.com/archive/1/502526/100/0/threaded ([email protected])
http://www.securityfocus.com/archive/1/502546/100/0/threaded ([email protected])
http://www.securityfocus.com/bid/34257 ([email protected])
http://www.securitytracker.com/id?1021867 ([email protected])
http://www.ubuntu.com/usn/usn-755-1 ([email protected])
http://www.us-cert.gov/cas/techalerts/TA09-133A.html US Government Resource ([email protected])
http://www.vupen.com/english/advisories/2009/0847 Vendor Advisory ([email protected])
http://www.vupen.com/english/advisories/2009/0976 ([email protected])
http://www.vupen.com/english/advisories/2009/1057 ([email protected])
http://www.vupen.com/english/advisories/2009/1106 ([email protected])
http://www.vupen.com/english/advisories/2009/1297 ([email protected])
http://www.vupen.com/english/advisories/2009/2248 Vendor Advisory ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/49448 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10044 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6449 ([email protected])
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html ([email protected])
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html ([email protected])
http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402 (af854a3a-2127-422b-91ae-364da2661108)
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34347 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34594 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34617 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34622 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34628 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34630 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34637 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34640 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34734 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/35074 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-200904-09.xml (af854a3a-2127-422b-91ae-364da2661108)
http://src.mit.edu/fisheye/browse/krb5/trunk/src/lib/gssapi/spnego/spnego_mech.c?r1=21875&r2=22084 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://src.mit.edu/fisheye/changelog/krb5/?cs=22084 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1 (af854a3a-2127-422b-91ae-364da2661108)
http://support.apple.com/kb/HT3549 (af854a3a-2127-422b-91ae-364da2661108)
http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm (af854a3a-2127-422b-91ae-364da2661108)
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html (af854a3a-2127-422b-91ae-364da2661108)
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html (af854a3a-2127-422b-91ae-364da2661108)
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt (af854a3a-2127-422b-91ae-364da2661108)
http://wiki.rpath.com/Advisories:rPSA-2009-0058 (af854a3a-2127-422b-91ae-364da2661108)
http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058 (af854a3a-2127-422b-91ae-364da2661108)
http://www-01.ibm.com/support/docview.wss?uid=swg21396120 (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/662091 US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.mandriva.com/security/advisories?name=MDVSA-2009:082 (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2009-0408.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/502526/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/502546/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/34257 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1021867 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/usn-755-1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.us-cert.gov/cas/techalerts/TA09-133A.html US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/0847 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/0976 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/1057 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/1106 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/1297 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/2248 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/49448 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10044 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6449 (af854a3a-2127-422b-91ae-364da2661108)
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html (af854a3a-2127-422b-91ae-364da2661108)
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html (af854a3a-2127-422b-91ae-364da2661108)