Bug 1315202 – CVE-2016-1979 nss: Use-after-free during processing of DER encoded keys in NSS (MFSA 2016-36)

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Bug 1315202 - (CVE-2016-1979) CVE-2016-1979 nss: Use-after-free during processing of DER encoded keys in NSS (MFSA 2016-36)

Summary:	CVE-2016-1979 nss: Use-after-free during processing of DER encoded keys in NS...

Status:	NEW

Aliases:	CVE-2016-1979

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

Priority	medium Severity medium
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Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20160308,repor...
Keywords:	Security

Depends On:	1316003 1323648 1323649 1323650 1323651 1323652
Blocks:	1310521
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Reported:	2016-03-07 04:02 EST by Huzaifa S. Sidhpurwala
Modified:	2016-04-25 08:15 EDT (History)
CC List:	2 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	A use-after-free flaw was found in the way NSS processed certain DER (Distinguished Encoding Rules) encoded cryptographic keys. An attacker could use this flaw to create a specially crafted DER encoded certificate which, when parsed by an application compiled against the NSS library, could cause that application to crash, or execute arbitrary code using the permissions of the user running the application.
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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-2016:0591	normal	SHIPPED_LIVE	Moderate: nss, nss-util, and nspr security, bug fix, and enhancement update	2016-04-05 11:19:29 EDT
Red Hat Product Errata	RHSA-2016:0684	normal	SHIPPED_LIVE	Moderate: nss and nspr security, bug fix, and enhancement update	2016-04-25 12:14:15 EDT
Red Hat Product Errata	RHSA-2016:0685	normal	SHIPPED_LIVE	Moderate: nss, nspr, nss-softokn, and nss-util security, bug fix, and enhancement update	2016-04-25 11:57:46 EDT

Groups: None (edit)

Description Huzaifa S. Sidhpurwala 2016-03-07 04:02:25 EST

Mozilla developer Tim Taubert used the Address Sanitizer tool and software fuzzing to discover a use-after-free vulnerability while processing DER encoded keys in the Network Security Services (NSS) libraries. The vulnerability overwrites the freed memory with zeroes. This issue has been addressed in NSS 3.21.1, shipping in Firefox 45. 

External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2016-36

Comment 1 Huzaifa S. Sidhpurwala 2016-03-07 04:02:32 EST

Acknowledgments:

Name: the Mozilla project
Upstream: Tim Taubert

Comment 2 Huzaifa S. Sidhpurwala 2016-03-09 03:43:39 EST

Created nss tracking bugs for this issue:

Affects: fedora-all [bug 1316003]

Comment 4 errata-xmlrpc 2016-04-05 07:20:02 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0591 https://rhn.redhat.com/errata/RHSA-2016-0591.html

Comment 5 errata-xmlrpc 2016-04-25 07:58:22 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:0685 https://rhn.redhat.com/errata/RHSA-2016-0685.html

Comment 6 errata-xmlrpc 2016-04-25 08:15:07 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5

Via RHSA-2016:0684 https://rhn.redhat.com/errata/RHSA-2016-0684.html

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