Bug 1025637 (CVE-2013-4487)

Summary:	CVE-2013-4487 gnutls: dane_query_tlsa() CVE-2013-4466 fix off-by-one
Product:	[Other] Security Response	Reporter:	Ratul Gupta <ratulg>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	erik-fedora, jkurik, jorton, ktietz, rjones, seceng-idm-qe-list, tmraz
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	gnutls 3.1.16, gnutls 3.2.6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-08-24 19:46:41 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:	1022925, 1025638
Bug Blocks:	1025639

Description Ratul Gupta 2013-11-01 07:02:42 UTC

GnuTLS upstream recently fixed a bug, which seems to have emerged due to the fix implemented in CVE-2013-4466.

Upstream recommends to update to GnuTLS 3.1.16 and 3.2.6.

References:
http://seclists.org/oss-sec/2013/q4/199

Commits:
https://gitorious.org/gnutls/gnutls/commit/0dd5529509e46b11d5c0f3f26f99294e0e5fa6dc
https://gitorious.org/gnutls/gnutls/commit/ad6a243b5ad219fda7511d4cbc1f73d77414db77

Comment 1 Ratul Gupta 2013-11-01 07:04:06 UTC

Created gnutls tracking bugs for this issue:

Affects: fedora-all [bug 1025638]

Comment 2 Tomas Hoger 2013-11-05 21:10:27 UTC

This CVE is for an incorrect fix for CVE-2013-4466 (see bug 1022913).  It contained an off-by-one error, causing it to possibly write 5 entries to 4 slot arrays in dane_query_st / dane_query_t.  Problem is already mentioned in bug 1022913 comment 7.

Acknowledment:

This issue was discovered by Tomas Mraz of Red Hat.

Comment 3 Tomas Hoger 2013-11-05 21:11:46 UTC

Statement:

Not vulnerable. This issue did not affect the versions of gnutls as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include support for DANE protocol.

Comment 4 Fedora Update System 2013-11-10 08:10:05 UTC

gnutls-3.1.16-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2013-11-18 02:56:19 UTC

gnutls-3.1.16-1.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.