CVE-2010-4021

Publication date 2 December 2010

Last updated 24 July 2024

Ubuntu priority

Description

The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a "KrbFastReq forgery issue."

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
krb5	10.10 maverick	Not affected
	10.04 LTS lucid	Not affected
	9.10 karmic	Fixed 1.7dfsg~beta3-1ubuntu0.7
	8.04 LTS hardy	Not affected
	6.06 LTS dapper	Not affected

How can I get the fixes?
What do statuses mean?
Patch details

Notes

mdeslaur

1.7 only

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://anonsvn.mit.edu/viewvc/krb5?view=revision&revision=23643

References

MITRE
NVD
Launchpad
Debian

Related Ubuntu Security Notices (USN)

USN-1030-1
Kerberos vulnerabilities
9 December 2010

Other references

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt
https://www.cve.org/CVERecord?id=CVE-2010-4021