Bug 1349042 – Incorrect length calculation in libkrad

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Bug 1349042 - Incorrect length calculation in libkrad

Summary:	Incorrect length calculation in libkrad

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	krb5 (Show other bugs)
Sub Component:
Version:	7.3
Hardware:	Unspecified Unspecified

Priority	unspecified Severity unspecified
Target Milestone:	rc
Target Release:	---
Assigned To:	Robbie Harwood
QA Contact:	Patrik Kis
Docs Contact:

URL:
Whiteboard:
Keywords:

Duplicates:	1344031 (view as bug list)
Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2016-06-22 11:04 EDT by Nathaniel McCallum
Modified:	2016-11-03 16:25 EDT (History)
CC List:	5 users (show)

See Also:	1344031
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 16:25:29 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:2591	normal	SHIPPED_LIVE	Low: krb5 security, bug fix, and enhancement update	2016-11-03 08:10:29 EDT

Groups: None (edit)

Description Nathaniel McCallum 2016-06-22 11:04:50 EDT

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

Comment 7 Robbie Harwood 2016-06-29 11:16:21 EDT

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

Comment 11 thibaut.pouzet 2016-08-09 10:12:07 EDT

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

Comment 12 Robbie Harwood 2016-08-09 11:18:26 EDT

(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 16:25:29 EDT

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

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