CVE-2012-1015

Publication date 31 July 2012

Last updated 24 July 2024

Ubuntu priority

The kdc_handle_protected_negotiation function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x before 1.9.5, and 1.10.x before 1.10.3 attempts to calculate a checksum before verifying that the key type is appropriate for a checksum, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized pointer free, heap memory corruption, and daemon crash) via a crafted AS-REQ request.

Read the notes from the security team

Status

Show unmaintained releases

No maintained releases are affected by this CVE.

Package	Ubuntu Release	Status
krb5	12.04 LTS precise	Fixed 1.10+dfsg~beta1-2ubuntu0.3
	11.10 oneiric	Fixed 1.9.1+dfsg-1ubuntu2.3
	11.04 natty	Fixed 1.8.3+dfsg-5ubuntu2.3
	10.04 LTS lucid	Fixed 1.8.1+dfsg-2ubuntu0.11
	8.04 LTS hardy	Not affected

Notes

sbeattie

krb5 1.8 and newer code execution potential probably blocked by glibc double-free detection

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
krb5	Upstream: http://web.mit.edu/kerberos/advisories/2012-001-patch.txt

References

Related Ubuntu Security Notices (USN)