REDHAT-BUG-490634: Null Pointer Dereference
First published: Tue Mar 17 2009(Updated: )
A null pointer dereference flaw was found in Kerberos's GSS-API spnego security mechanism implemenation. A local user could use this flaw to cause a denial of service (krb5 daemon crash) via invalid ContextFlags for the reqFlags field in the NegTokenInit (RFC 4178). References: <a href="http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402">http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402</a> Upstream patch: <a href="http://src.mit.edu/fisheye/changelog/krb5/?cs=22099">http://src.mit.edu/fisheye/changelog/krb5/?cs=22099</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MIT Kerberos 5 Application |
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Reference Links
- http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402
- 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
- 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://www.securityfocus.com/bid/34257
- http://secunia.com/advisories/34347
- http://www.vupen.com/english/advisories/2009/0847
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt
- 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
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2009-0845
- agent/weakness
- agent/references
- agent/severity
- agent/description
- agent/event
- agent/source
- agent/tags
- agent/softwarecombine
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/mit
- canonical/mit kerberos 5 application