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CVE-2009-0847

4.3 · MEDIUM

The asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a denial of service (application crash) via a crafted leng…

Published Apr 9, 2009mitCWE-189EPSS 2.77%

Overview

CVE-2009-0847 is a medium-severity vulnerability affecting mit kerberos. It was published on April 9, 2009 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a denial of service (application crash) via a crafted length value that triggers an erroneous malloc call, related to incorrect calculations with pointer arithmetic.

Remediation

Check the references section for vendor advisories and patches from mit. Update kerberos 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

References

Reflists.apple.com/archives/security-announce/2009/May/msg00002.htmlRefmarc.info/?l=bugtraq&m=124896429301168&w=2Refsecunia.com/advisories/34594Refsecunia.com/advisories/34617Refsecunia.com/advisories/34622Refsecunia.com/advisories/34628Refsecunia.com/advisories/34637Refsecunia.com/advisories/34640Refsecunia.com/advisories/34734Refsecunia.com/advisories/35074

How CyberStrike helps

Frequently asked questions

What is CVE-2009-0847?

CVE-2009-0847 is a medium-severity vulnerability affecting mit kerberos. It was published on April 9, 2009 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2009-0847?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-0847?

Check the references section for vendor advisories and patches from mit. Update kerberos 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-2009-0847?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-0847 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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