Bug 1349042

Summary:	Incorrect length calculation in libkrad
Product:	Red Hat Enterprise Linux 7	Reporter:	Nathaniel McCallum <npmccallum>
Component:	krb5	Assignee:	Robbie Harwood <rharwood>
Status:	CLOSED ERRATA	QA Contact:	Patrik Kis <pkis>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.3	CC:	dpal, ekeck, mkosek, pkis, thibaut.pouzet
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	krb5-1.14.1-18.el7	Doc Type:	Bug Fix
Doc Text:	Cause: Incorrect length calculation in libkrad Consequence: ipa-otpd may experience timeouts Fix: Check length correctly Result: No more timeouts	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-03 20:25:29 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Nathaniel McCallum 2016-06-22 15:04:50 UTC

Upstream pull request: https://github.com/krb5/krb5/pull/471

Comment 7 Robbie Harwood 2016-06-29 15:16:21 UTC

*** Bug 1344031 has been marked as a duplicate of this bug. ***

Comment 11 thibaut.pouzet 2016-08-09 14:12:07 UTC

Should I be worried about this bug becoming a security issue if properly exploited ?

Comment 12 Robbie Harwood 2016-08-09 15:18:26 UTC

(In reply to thibaut.pouzet from comment #11)
> Should I be worried about this bug becoming a security issue if properly
> exploited ?

If exploited, it's a network-controlled write past the end of a buffer.  This buffer is on the heap, so it's very hard (though not impossible) to actually exploit.  That this issue may cause sporadic application failures was deemed a more pressing issue.

Comment 14 errata-xmlrpc 2016-11-03 20:25:29 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

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