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CVE-2009-4212

10.0 · HIGH

Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 (aka krb5) 1.3 through 1.6.3, and 1.7 before 1.7.1, allow remote attackers to…

Published Jan 13, 2010mitCWE-189EPSS 7.55%

Overview

CVE-2009-4212 is a high-severity vulnerability affecting mit kerberos. It was published on January 13, 2010 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

Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 (aka krb5) 1.3 through 1.6.3, and 1.7 before 1.7.1, allow remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by providing ciphertext with a length that is too short to be valid.

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/2010//Jun/msg00001.htmlReflists.fedoraproject.org/pipermail/package-announce/2010-January/033915.htmlReflists.fedoraproject.org/pipermail/package-announce/2010-January/033919.htmlRefmarc.info/?l=bugtraq&m=130497213107107&w=2Refsecunia.com/advisories/38080Refsecunia.com/advisories/38108Refsecunia.com/advisories/38126Refsecunia.com/advisories/38140Refsecunia.com/advisories/38184Refsecunia.com/advisories/38203

How CyberStrike helps

Frequently asked questions

What is CVE-2009-4212?

CVE-2009-4212 is a high-severity vulnerability affecting mit kerberos. It was published on January 13, 2010 and has a CVSS 2.0 base score of 10.0 (HIGH).

How severe is CVE-2009-4212?

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-2009-4212?

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-2009-4212?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-4212 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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