CVE-2009-4212

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-01-13 · updated 2026-06-16
Weakness: CWE-189

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.

Affected products

MIT Kerberos: 5-1.6.3
MIT Kerberos 5: 1.3, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5 (+14)

References

http://lists.apple.com/archives/security-announce/2010//Jun/msg00001.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033915.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033919.html
http://marc.info/?l=bugtraq&m=130497213107107&w=2
http://secunia.com/advisories/38080
http://secunia.com/advisories/38108
http://secunia.com/advisories/38126
http://secunia.com/advisories/38140
http://secunia.com/advisories/38184
http://secunia.com/advisories/38203
http://secunia.com/advisories/38696
http://secunia.com/advisories/40220

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