CVE-2015-2694

Publication date 25 May 2015

Last updated 24 July 2024

Ubuntu priority

The kdcpreauth modules in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.2 do not properly track whether a client's request has been validated, which allows remote attackers to bypass an intended preauthentication requirement by providing (1) zero bytes of data or (2) an arbitrary realm name, related to plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit_srv.c.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
krb5	15.10 wily	Not affected
	15.04 vivid	Fixed 1.12.1+dfsg-18ubuntu0.1
	14.10 utopic	Ignored
	14.04 LTS trusty	Fixed 1.12+dfsg-2ubuntu5.2
	12.04 LTS precise	Not affected
	10.04 LTS lucid	Not affected

Notes

tyhicks

affects 1.12 and later

Patch details

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

Package	Patch details
krb5	Upstream: e3b5a5e

References

Related Ubuntu Security Notices (USN)

USN-2810-1
Kerberos vulnerabilities
12 November 2015

Other references

https://www.cve.org/CVERecord?id=CVE-2015-2694