Bug 1374266 – CVE-2016-7444 gnutls: Incorrect certificate validation when using OCSP responses (GNUTLS-SA-2016-3)

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Bug 1374266 - (CVE-2016-7444) CVE-2016-7444 gnutls: Incorrect certificate validation when using OCSP responses (GNUTLS-SA-2016-3)

Summary:	CVE-2016-7444 gnutls: Incorrect certificate validation when using OCSP respon...

Status:	CLOSED ERRATA

Aliases:	CVE-2016-7444

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20160902,reported=2...
Keywords:	Security

Depends On:	1374267 1374269 1374270 1377569
Blocks:	1374271 1415638
	Show dependency tree / graph

Reported:	2016-09-08 07:25 EDT by Adam Mariš
Modified:	2018-09-13 03:27 EDT (History)
CC List:	8 users (show)

See Also:
Fixed In Version:	gnutls 3.4.15, gnutls 3.5.4
Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the way GnuTLS validated certificates using OCSP responses. This could falsely report a certificate as valid under certain circumstances.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2018-09-13 02:45:03 EDT
Type:	---
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-2017:2292	normal	SHIPPED_LIVE	Moderate: gnutls security, bug fix, and enhancement update	2017-08-01 08:39:15 EDT

Groups: None (edit)

Description Adam Mariš 2016-09-08 07:25:34 EDT

It was found an issue in certificate validation using OCSP responses caused by not verifying the serial length, which can falsely report a certificate as valid.

Upstream patch:

https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9

External References:

https://www.gnutls.org/security.html
https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html

Comment 1 Adam Mariš 2016-09-08 07:28:06 EDT

Created mingw-gnutls tracking bugs for this issue:

Affects: fedora-all [bug 1374269]
Affects: epel-7 [bug 1374270]

Comment 2 Adam Mariš 2016-09-08 07:28:12 EDT

Created gnutls tracking bugs for this issue:

Affects: fedora-all [bug 1374267]

Comment 5 Fedora Update System 2016-09-12 09:18:14 EDT

gnutls-3.5.4-1.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2016-09-13 18:23:50 EDT

gnutls-3.4.15-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2016-09-13 21:19:14 EDT

gnutls-3.4.15-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2016-09-14 11:55:01 EDT

mingw-gnutls-3.5.4-1.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.

Comment 9 Andrej Nemec 2016-09-19 05:33:32 EDT

CVE assignment:

http://seclists.org/oss-sec/2016/q3/549

Comment 12 errata-xmlrpc 2017-08-01 04:49:37 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:2292 https://access.redhat.com/errata/RHSA-2017:2292

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