CVE-2009-4212

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.

Category

10.0
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 20.91% Top 5%
Vendor Advisory apple.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory marc.info Vendor Advisory fedoraproject.org Vendor Advisory mandriva.com Vendor Advisory sun.com Vendor Advisory sun.com Vendor Advisory fedoraproject.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory mit.edu
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.apple.com/archives/security-announce/2010//Jun/msg00001.html vendor advisory
http://secunia.com/advisories/38140 third party advisory
http://www.vupen.com/english/advisories/2010/0096 vdb entry
http://support.avaya.com/css/P8/documents/100074869
http://secunia.com/advisories/38126 third party advisory
http://www.debian.org/security/2010/dsa-1969 vendor advisory
http://www.vupen.com/english/advisories/2010/1481 vdb entry
http://ubuntu.com/usn/usn-881-1 vendor advisory
http://marc.info/?l=bugtraq&m=130497213107107&w=2 vendor advisory
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-004.txt patch vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033915.html vendor advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2010:006 vendor advisory
http://www.securitytracker.com/id?1023440 vdb entry
http://secunia.com/advisories/38080 third party advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-66-275530-1 vendor advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021779.1-1 vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8192 vdb entry signature
http://secunia.com/advisories/38203 third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=545015 patch
http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033919.html vendor advisory
http://support.apple.com/kb/HT4188
http://secunia.com/advisories/40220 third party advisory
http://secunia.com/advisories/38108 third party advisory
http://www.securityfocus.com/bid/37749 vdb entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11272 vdb entry signature
https://rhn.redhat.com/errata/RHSA-2010-0029.html vendor advisory
https://rhn.redhat.com/errata/RHSA-2010-0095.html vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7357 vdb entry signature
http://secunia.com/advisories/38696 third party advisory
http://www.vupen.com/english/advisories/2010/0129 vdb entry
http://secunia.com/advisories/38184 third party advisory

Frequently Asked Questions

What is the severity of CVE-2009-4212?
CVE-2009-4212 has been scored as a critical severity vulnerability.
How to fix CVE-2009-4212?
To fix CVE-2009-4212, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-4212 being actively exploited in the wild?
It is possible that CVE-2009-4212 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~21% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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