CVE-2009-0845
MEDIUM · CVSS 5.0EPSS 5.6%EU EUVD
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.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-20
- EPSS score
- 5.6% (93th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-0842)
- Published
- March 27, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-0842 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- mit / kerberos
- mit / kerberos 5
- mit / kerberos 5
- mit / kerberos 5
- mit / kerberos 5
- mit / kerberos 5
- mit / kerberos 5
- mit / kerberos 5
References
- 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(Vendor Advisory)
- 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(Vendor Advisory)
- 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(Exploit)
- http://src.mit.edu/fisheye/changelog/krb5/?cs=22084(Vendor Advisory)
- 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(US Government Resource)
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:082
- http://www.redhat.com/support/errata/RHSA-2009-0408.html
- http://www.securityfocus.com/archive/1/502526/100/0/threaded
- http://www.securityfocus.com/archive/1/502546/100/0/threaded
- http://www.securityfocus.com/bid/34257
- http://www.securitytracker.com/id?1021867
- http://www.ubuntu.com/usn/usn-755-1
- http://www.us-cert.gov/cas/techalerts/TA09-133A.html(US Government Resource)
- http://www.vupen.com/english/advisories/2009/0847(Vendor Advisory)
- http://www.vupen.com/english/advisories/2009/0976
- http://www.vupen.com/english/advisories/2009/1057
- http://www.vupen.com/english/advisories/2009/1106
- http://www.vupen.com/english/advisories/2009/1297
- http://www.vupen.com/english/advisories/2009/2248(Vendor Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49448
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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