CVE-2009-0845: Input Validation
First published: Fri Mar 13 2009(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/krb5 | <0:1.6.1-31.el5_3.3 | 0:1.6.1-31.el5_3.3 |
| MIT Kerberos 5 Application | =5-1.6.3 | |
| MIT Kerberos 5 Application | =1.5 | |
| MIT Kerberos 5 Application | =1.5.1 | |
| MIT Kerberos 5 Application | =1.5.2 | |
| MIT Kerberos 5 Application | =1.5.3 | |
| MIT Kerberos 5 Application | =1.6 | |
| MIT Kerberos 5 Application | =1.6.1 | |
| MIT Kerberos 5 Application | =1.6.2 |
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Reference Links
- http://src.mit.edu/fisheye/browse/krb5/trunk/src/lib/gssapi/spnego/spnego_mech.c?r1=21875&r2=22084
- http://www.securityfocus.com/bid/34257
- http://secunia.com/advisories/34347
- http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402
- http://www.vupen.com/english/advisories/2009/0847
- http://src.mit.edu/fisheye/changelog/krb5/?cs=22084
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:082
- http://www.kb.cert.org/vuls/id/662091
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt
- http://www.ubuntu.com/usn/usn-755-1
- http://wiki.rpath.com/Advisories:rPSA-2009-0058
- http://security.gentoo.org/glsa/glsa-200904-09.xml
- http://www.vupen.com/english/advisories/2009/0976
- http://www.securitytracker.com/id?1021867
- http://secunia.com/advisories/34640
- http://secunia.com/advisories/34617
- http://secunia.com/advisories/34594
- http://secunia.com/advisories/34637
- http://secunia.com/advisories/34622
- http://secunia.com/advisories/34630
- https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html
- https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html
- http://www.redhat.com/support/errata/RHSA-2009-0408.html
- http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058
- http://secunia.com/advisories/34628
- http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1
- http://www.vupen.com/english/advisories/2009/1106
- http://www.vupen.com/english/advisories/2009/1057
- http://secunia.com/advisories/34734
- http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html
- http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html
- http://www.vupen.com/english/advisories/2009/1297
- http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
- http://www.us-cert.gov/cas/techalerts/TA09-133A.html
- http://secunia.com/advisories/35074
- http://support.apple.com/kb/HT3549
- http://www-01.ibm.com/support/docview.wss?uid=swg21396120
- http://www.vupen.com/english/advisories/2009/2248
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49448
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6449
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10044
- http://www.securityfocus.com/archive/1/502546/100/0/threaded
- http://www.securityfocus.com/archive/1/502526/100/0/threaded
- http://src.mit.edu/fisheye/changelog/krb5/?cs=22099
- http://admin.fedoraproject.org/updates/krb5-1.6.3-17.fc10
- http://admin.fedoraproject.org/updates/krb5-1.6.3-15.fc9
- http://anonsvn.mit.edu/cgi-bin/viewcvs.cgi?rev=22084&view=rev
- https://access.redhat.com/security/cve/CVE-2009-0845
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0845
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=491033#c7
- https://rhn.redhat.com/errata/RHSA-2009-0408.html
- http://rhn.redhat.com/errata/RHSA-2009-0408.html
- https://admin.fedoraproject.org/updates/F10/FEDORA-2009-2852
- https://admin.fedoraproject.org/updates/F9/FEDORA-2009-2834
- http://essaypapers.reviews/
- https://visbody.com/3d-body-scanner-in-fitness-sports/
- https://bugzilla.redhat.com/show_bug.cgi?id=490634
- https://www.cve.org/CVERecord?id=CVE-2009-0845 https://nvd.nist.gov/vuln/detail/CVE-2009-0845
- https://access.redhat.com/errata/RHSA-2009:0408
- https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2009-0845.json
Frequently Asked Questions
What is the severity of CVE-2009-0845?
CVE-2009-0845 has a high severity rating due to its potential to cause a denial of service through a null pointer dereference.
How do I fix CVE-2009-0845?
To fix CVE-2009-0845, update MIT Kerberos 5 to versions later than 1.6.3 or apply relevant patches provided by your distribution.
What software is affected by CVE-2009-0845?
CVE-2009-0845 affects MIT Kerberos 5 versions 1.5 through 1.6.3.
Can CVE-2009-0845 be exploited remotely?
Yes, CVE-2009-0845 can be exploited remotely by sending invalid ContextFlags data.
What is the impact of CVE-2009-0845?
The impact of CVE-2009-0845 is that it can lead to a daemon crash, causing a denial of service.
- agent/weakness
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- collector/redhat-bugzilla
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- alias/CVE-2009-0845
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- agent/severity
- agent/description
- collector/redhat-cve
- agent/software-canonical-lookup
- agent/event
- agent/trending
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- collector/nvd-historical
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/softwarecombine
- agent/tags
- package-manager/redhat
- vendor/mit
- canonical/mit kerberos 5 application
- version/mit kerberos 5 application/5-1.6.3
- version/mit kerberos 5 application/1.5
- version/mit kerberos 5 application/1.5.1
- version/mit kerberos 5 application/1.5.2
- version/mit kerberos 5 application/1.5.3
- version/mit kerberos 5 application/1.6
- version/mit kerberos 5 application/1.6.1
- version/mit kerberos 5 application/1.6.2