Bug 1383883 (CVE-2016-5285)

Summary:	CVE-2016-5285 nss: Missing NULL check in PK11_SignWithSymKey / ssl3_ComputeRecordMACConstantTime causes server crash
Product:	[Other] Security Response	Reporter:	Huzaifa S. Sidhpurwala <huzaifas>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	hkario, jechoi, jeffa.lans, kengert, security-response-team, slawomir, szidek, yozone
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 the way NSS handled invalid Diffie-Hellman keys. A remote client could use this flaw to crash a TLS/SSL server using NSS.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-16 06:16:37 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:	1383884, 1383885, 1383886, 1383887, 1383888, 1395535, 1429932, 1429933
Bug Blocks:	1374803, 1377248, 1380228

Description Huzaifa S. Sidhpurwala 2016-10-12 03:55:44 UTC

A flaw was found in the way a NSS server could be crashed remotely by a client sending an invalid DH key.

Comment 2 Huzaifa S. Sidhpurwala 2016-11-14 03:39:09 UTC

Upstream commit:

https://hg.mozilla.org/projects/nss/rev/45c047d18ac4

Comment 3 Huzaifa S. Sidhpurwala 2016-11-14 07:26:34 UTC

*** Bug 1380235 has been marked as a duplicate of this bug. ***

Comment 5 errata-xmlrpc 2016-11-16 05:59:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 5

Via RHSA-2016:2779 https://rhn.redhat.com/errata/RHSA-2016-2779.html

Comment 6 Huzaifa S. Sidhpurwala 2016-11-16 06:16:00 UTC

Created nss tracking bugs for this issue:

Affects: fedora-all [bug 1395535]

Comment 7 Hubert Kario 2016-11-30 15:56:22 UTC

*** Bug 1374803 has been marked as a duplicate of this bug. ***