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CVE-2009-0846

10.0 · HIGH

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 serv…

Published Apr 9, 2009mitCWE-824EPSS 8.90%

Overview

CVE-2009-0846 is a high-severity vulnerability affecting mit kerberos_5. It was published on April 9, 2009 and has a CVSS 2.0 base score of 10.0 (HIGH).

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from mit. Update kerberos_5 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
mitkerberos_5>= 0, < 1.6.4Affected
applemac_os_x>= 0, < 10.5.7Affected

References

Reflists.apple.com/archives/security-announce/2009/May/msg00002.htmlReflists.vmware.com/pipermail/security-announce/2009/000059.htmlRefmarc.info/?l=bugtraq&m=124896429301168&w=2Refmarc.info/?l=bugtraq&m=130497213107107&w=2Refrhn.redhat.com/errata/RHSA-2009-0409.htmlRefrhn.redhat.com/errata/RHSA-2009-0410.htmlRefsecunia.com/advisories/34594Refsecunia.com/advisories/34598Refsecunia.com/advisories/34617Refsecunia.com/advisories/34622

How CyberStrike helps

Frequently asked questions

What is CVE-2009-0846?

CVE-2009-0846 is a high-severity vulnerability affecting mit kerberos_5. It was published on April 9, 2009 and has a CVSS 2.0 base score of 10.0 (HIGH).

How severe is CVE-2009-0846?

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-0846?

Check the references section for vendor advisories and patches from mit. Update kerberos_5 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-0846?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-0846 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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