Bug 1319616 (CVE-2016-3119)

Summary:	CVE-2016-3119 krb5: null pointer dereference in kadmin
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abokovoy, csutherl, dknox, dpal, jclere, jdoyle, jplans, j, lgao, mbabacek, myarboro, nalin, npmccallum, pkis, rharwood, sardella, slawomir, twalsh, weli
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A NULL pointer dereference flaw was found in MIT Kerberos kadmind service. An authenticated attacker with permission to modify a principal entry could use this flaw to cause kadmind to dereference a null pointer and crash by supplying an empty DB argument to the modify_principal command, if kadmind was configured to use the LDAP KDB module.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:49:54 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1319617, 1339562
Bug Blocks:	1319623, 1323912

Description Andrej Nemec 2016-03-21 08:35:45 UTC

It was reported that in all versions of MIT krb5, an authenticated attacker with permission to modify a principal entry can cause kadmind to dereference a null pointer by supplying an empty DB argument to the modify_principal command, if kadmind is configured to use the LDAP KDB module.

Upstream patch:

https://github.com/krb5/krb5/commit/08c642c09c38a9c6454ab43a9b53b2a89b9eef99

Comment 1 Andrej Nemec 2016-03-21 08:36:21 UTC

Created krb5 tracking bugs for this issue:

Affects: fedora-all [bug 1319617]

Comment 3 errata-xmlrpc 2016-11-03 20:24:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2591 https://rhn.redhat.com/errata/RHSA-2016-2591.html