CVE-2009-0845

Public Exploit

Description

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 29.28% Top 5%
Vendor Advisory redhat.com Vendor Advisory mandriva.com Vendor Advisory sun.com Vendor Advisory gentoo.org Vendor Advisory apple.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory mit.edu Vendor Advisory vupen.com Vendor Advisory vupen.com
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2009-0845?
CVE-2009-0845 has been scored as a medium severity vulnerability.
How to fix CVE-2009-0845?
To fix CVE-2009-0845, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-0845 being actively exploited in the wild?
It is possible that CVE-2009-0845 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~29% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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