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Vulnerability record · CVE-2009-0846 · published 9 April 2009

CVE-2009-0846: Mit kerberos 5 vulnerability

Mit · Kerberos 5

The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer.

10.0 CVSS 2.0 High EPSS 8.9% · top 4.9% CWE-824 · CWE-824
10.0CVSS 2.0 base score
8.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
100References
16 Jun 2026Last modified by NVD

Description

The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer.

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

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html Mailing List
http://lists.vmware.com/pipermail/security-announce/2009/000059.html Broken Link
http://marc.info/?l=bugtraq&m=124896429301168&w=2 Third Party Advisory
http://marc.info/?l=bugtraq&m=130497213107107&w=2 Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-0409.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-0410.html Third Party Advisory
http://secunia.com/advisories/34594 Broken Link
http://secunia.com/advisories/34598 Broken Link
http://secunia.com/advisories/34617 Broken Link
http://secunia.com/advisories/34622 Broken Link
http://secunia.com/advisories/34628 Broken Link
http://secunia.com/advisories/34630 Broken Link
http://secunia.com/advisories/34637 Broken Link
http://secunia.com/advisories/34640 Broken Link
http://secunia.com/advisories/34734 Broken Link
http://secunia.com/advisories/35074 Broken Link
http://secunia.com/advisories/35667 Broken Link
http://security.gentoo.org/glsa/glsa-200904-09.xml Third Party Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1 Broken Link
http://support.apple.com/kb/HT3549 Third Party Advisory
http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm Third Party Advisory
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html Broken Link
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html Broken Link
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-002.txt PatchVendor Advisory
http://wiki.rpath.com/Advisories:rPSA-2009-0058 Broken Link
http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058 Broken Link
http://www-01.ibm.com/support/docview.wss?uid=swg21396120 Broken Link
http://www.kb.cert.org/vuls/id/662091 Broken LinkThird Party AdvisoryUS Government Resource
http://www.mandriva.com/security/advisories?name=MDVSA-2009:098 Broken Link
http://www.redhat.com/support/errata/RHSA-2009-0408.html Broken Link
http://www.securityfocus.com/archive/1/502527/100/0/threaded Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/502546/100/0/threaded Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/504683/100/0/threaded Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/34409 Broken LinkThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id?1021994 Broken LinkThird Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/usn-755-1 Third Party Advisory
http://www.us-cert.gov/cas/techalerts/TA09-133A.html Third Party AdvisoryUS Government Resource
http://www.vmware.com/security/advisories/VMSA-2009-0008.html Third Party Advisory
http://www.vupen.com/english/advisories/2009/0960 Broken Link
http://www.vupen.com/english/advisories/2009/0976 Broken Link

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Source: NIST National Vulnerability Database (record CVE-2009-0846), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.