Bug 1269351 (CVE-2015-7182)

Summary:	CVE-2015-7182 nss: ASN.1 decoder heap overflow when decoding constructed OCTET STRING that mixes indefinite and definite length encodings (MFSA 2015-133)
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:	urgent	Docs Contact:
Priority:	urgent
Version:	unspecified	CC:	carnil, cyril.cordouibarzi, emaldona, jrusnack, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nss 3.19.2.1, nss 3.19.4, nss 3.20.1	Doc Type:	Bug Fix
Doc Text:	A heap-based buffer overflow flaw was found in the way NSS parsed certain ASN.1 structures. An attacker could use this flaw to cause NSS to crash or execute arbitrary code with the permissions of the user running an application compiled against the NSS library.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-11-18 06:56:19 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:	1269354, 1269355, 1269356, 1269357, 1269358, 1269382, 1269383, 1269384, 1269385
Bug Blocks:	1269376

Description Huzaifa S. Sidhpurwala 2015-10-07 05:59:14 UTC

Mozilla engineers David Keeler reported a buffer overflow in the ASN.1 decoder in Network Security Services (NSS). These issues were in octet string parsing and were found through fuzzing and code inspection. If these issues were exploited, they would lead to a potentially exploitable crash.

These issues were fixed in NSS version 3.19.2.1 and 3.19.4, shipped in Firefox and Firefox ESR, respectively, as well as NSS 3.20.1.

Upstream bug:

https://bugzilla.mozilla.org/show_bug.cgi?id=1202868

External Reference:

https://www.mozilla.org/security/announce/2015/mfsa2015-133.html
https://access.redhat.com/articles/2043623

Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges David Keeler as the original reporter.

Comment 4 Tomas Hoger 2015-11-03 21:56:06 UTC

Fixed upstream in NSS version 3.19.2.1, 3.19.4, and 3.20.1:

https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19.2.1_release_notes
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19.4_release_notes
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.20.1_release_notes

Upstream commits:

http://hg.mozilla.org/projects/nss/rev/4dc247276e58
http://hg.mozilla.org/projects/nss/rev/534aca7a5bca
http://hg.mozilla.org/projects/nss/rev/b4feb2cb0ed6

Consolidated fix with all about changes as applied to 3.20 branch:

http://hg.mozilla.org/projects/nss/rev/f47d00c2732a

Comment 5 errata-xmlrpc 2015-11-04 07:12:18 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5

Via RHSA-2015:1980 https://rhn.redhat.com/errata/RHSA-2015-1980.html

Comment 6 errata-xmlrpc 2015-11-04 12:49:39 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 6

Via RHSA-2015:1981 https://rhn.redhat.com/errata/RHSA-2015-1981.html

Comment 7 errata-xmlrpc 2015-11-18 06:28:51 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.5 EUS - Server and Compute Node Only
  Red Hat Enterprise Linux 6.6 EUS - Server and Compute Node Only
  Red Hat Enterprise Linux 6.2 AUS
  Red Hat Enterprise Linux 6.4 AUS - Server Only

Via RHSA-2015:2068 https://rhn.redhat.com/errata/RHSA-2015-2068.html