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Category:   Application (Security)  >   Network Security Services (NSS) Vendors:   Mozilla.org
(Red Hat Issues Fix for Network Security Services (NSS)) Mozilla Firefox Multiple Flaws Let Remote Users Execute Arbitrary Code, Spoof the Address Bar, Overwrite Files, and Deny Service
SecurityTracker Alert ID:  1035221
SecurityTracker URL:  http://securitytracker.com/id/1035221
CVE Reference:   CVE-2016-1950   (Links to External Site)
Date:  Mar 9 2016
Impact:   Denial of service via network, Execution of arbitrary code via network, Modification of system information, Modification of user information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Multiple vulnerabilities were reported in Mozilla Firefox. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can cause denial of service conditions on the target system. A remote user can modify files on the target system. A remote user can bypass same-origin restrictions on the target system. A remote user can spoof the address bar. Network Security Services (NSS) is affected.

A remote user can create specially crafted content that, when loaded by the target user, will execute arbitrary code on the target user's system [CVE-2016-1952, CVE-2016-1953].

A remote user can create specially crafted HTML that, when loaded by the target user, will overwrite files on the target user's system with a Content Security Policy (CSP) violation report [CVE-2016-1954].

A remote user may be able to obtain full path information for cross-origin iframe navigations in a CSP violatin report [CVE-2016-1955].

A remote user can create content that, when loaded by the target user, will perform certain WebGL operations in a canvas to consume excessive memory resources on the target user's system [CVE-2016-1956]. Certain Intel drivers on Linux are affected.

A remote user can create a specially crafted MPEG4 video file that, when loaded by the target user, will trigger a memory leak in the libstagefright library [CVE-2016-1957].

A remote user can spoof the address bar URL [CVE-2016-1958].

A remote user can trigger a flaw in the Clients API in Service Workers to cause an out-of-bounds read in ServiceWorkerManager and potentially execute arbitrary code [CVE-2016-1959].

A remote user can trigger a use-after-free memory error in the HTML5 string parser and potentially execute arbitrary code [CVE-2016-1960].

A remote user can trigger a use-after-free memory error in the SetBody function of HTMLDocument and potentially execute arbitrary code [CVE-2016-1961].

A remote user can trigger a use-after-free memory error when using multiple WebRTC data channel connections and potentially execute arbitrary code [CVE-2016-1962].

A local user can modify a file being read by FileReader to potentially execute arbitrary code [CVE-2016-1963].

A remote user can trigger a use-after-free memory error during XML transformation operations and potentially execute arbitrary code [CVE-2016-1964].

A remote user can spoof the address bar using location.protocol and history.back [CVE-2016-1965].

A remote user may be able to read cross-origin URLs [CVE-2016-1967].

A remote user can trigger a buffer overflow in the Brotli library and potentially execute arbitrary code [CVE-2016-1968].

A remote user can trigger a pointer dereference in the Netscape Plugin Application Programming Interface (NPAPI) plug-in and potentially execute arbitrary code [CVE-2016-1966].

A remote user can trigger memory errors in WebRTC and potentially execute arbitrary code [CVE-2016-1970, CVE-2016-1971, CVE-2016-1975, CVE-2016-1976, CVE-2016-1972].

A remote user can trigger a race condition in WebRTC in GetStaticInstance() and potentially execute arbitrary code [CVE-2016-1973].

A remote user can trigger an out-of-bounds memory read error in parsing unicode strings and potentially execute arbitrary code [CVE-2016-1974].

A remote user can create a specially crafted ASN.1 encoded certificate that, when parsed by the Network Security Services (NSS) library, will trigger a heap overflow and potentially execute arbitrary code [CVE-2016-1950].

A remote user can trigger a use-after-free memory error in the NSS libraries when processing DER-encoded keys [CVE-2016-1979].

A remote user can create a specially crafted graphite font that, when loaded by the target user, will trigger a stack corruption, uninitialized memory, out-of-bounds read, or out-of-bounds write error and potentially execute arbitrary code [CVE-2016-1969, CVE-2016-1977, CVE-2016-2790, CVE-2016-2791, CVE-2016-2792, CVE-2016-2793, CVE-2016-2794, CVE-2016-2795, CVE-2016-2796, CVE-2016-2797, CVE-2016-2798, CVE-2016-2799, CVE-2016-2800, CVE-2016-2801, CVE-2016-2802].

Bob Clary, Christoph Diehl, Christian Holler, Andrew McCreight, Daniel Holbert, Jesse Ruderman, Randell Jesup, Carsten Book, Gian-Carlo Pascutto, Tyson Smith, Andrea Marchesini, Jukka Jylanki, Nicolas Golubovic, Muneaki Nishimura (nishimunea) of Recruit Technologies Co.,Ltd., Ucha Gobejishvili, Jose Martinez, Romina Santillan,
Abdulrahman Alqabandi, Looben Yang, ca0nguyen (via HP's Zero Day Initiative), lokihardt (via HP's Zero Day Initiative), Dominique Hazael-Massieux, Oriol, Nicolas Gregoire, Tsubasa Iinuma, Jordi Chancel, Luke Li, the Communications Electronics Security Group (UK) of the GCHQ, Ronald Crane, Francis Gabriel, Tim Taubert, Holger Fuhrmannek, and James Clawson reported these vulnerabilities.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.

A remote user can cause denial of service conditions.

A remote user can overwrite files on the target system.

A remote user can bypass same-origin restrictions on the target system.

A remote user can spoof the address bar.

Solution:   Red Hat has issued a fix for CVE-2016-1950 for Network Security Services (NSS).

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2016-0371.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2016-0371.html (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5

Message History:   This archive entry is a follow-up to the message listed below.
Mar 9 2016 Mozilla Firefox Multiple Flaws Let Remote Users Execute Arbitrary Code, Spoof the Address Bar, Overwrite Files, and Deny Service



 Source Message Contents

Subject:  [RHSA-2016:0371-01] Critical: nss security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Critical: nss security update
Advisory ID:       RHSA-2016:0371-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-0371.html
Issue date:        2016-03-09
CVE Names:         CVE-2016-1950 
=====================================================================

1. Summary:

Updated nss packages that fix one security issue are now available for
Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Critical security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop Workstation (v. 5 client) - i386, x86_64

3. Description:

Network Security Services (NSS) is a set of libraries designed to support
the cross-platform development of security-enabled client and server
applications.

A heap-based buffer overflow flaw was found in the way NSS parsed certain
ASN.1 structures. An attacker could use this flaw to create a specially
crafted certificate which, when parsed by NSS, could cause it to crash, or
execute arbitrary code, using the permissions of the user running an
application compiled against the NSS library. (CVE-2016-1950)

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

All nss users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. For the update to take
effect, all applications linked to the nss library must be restarted, or
the system rebooted.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1310509 - CVE-2016-1950 nss: Heap buffer overflow vulnerability in ASN1 certificate parsing (MFSA 2016-35)

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
nss-3.19.1-4.el5_11.src.rpm

i386:
nss-3.19.1-4.el5_11.i386.rpm
nss-debuginfo-3.19.1-4.el5_11.i386.rpm
nss-tools-3.19.1-4.el5_11.i386.rpm

x86_64:
nss-3.19.1-4.el5_11.i386.rpm
nss-3.19.1-4.el5_11.x86_64.rpm
nss-debuginfo-3.19.1-4.el5_11.i386.rpm
nss-debuginfo-3.19.1-4.el5_11.x86_64.rpm
nss-tools-3.19.1-4.el5_11.x86_64.rpm

Red Hat Enterprise Linux Desktop Workstation (v. 5 client):

Source:
nss-3.19.1-4.el5_11.src.rpm

i386:
nss-debuginfo-3.19.1-4.el5_11.i386.rpm
nss-devel-3.19.1-4.el5_11.i386.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.i386.rpm

x86_64:
nss-debuginfo-3.19.1-4.el5_11.i386.rpm
nss-debuginfo-3.19.1-4.el5_11.x86_64.rpm
nss-devel-3.19.1-4.el5_11.i386.rpm
nss-devel-3.19.1-4.el5_11.x86_64.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.i386.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
nss-3.19.1-4.el5_11.src.rpm

i386:
nss-3.19.1-4.el5_11.i386.rpm
nss-debuginfo-3.19.1-4.el5_11.i386.rpm
nss-devel-3.19.1-4.el5_11.i386.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.i386.rpm
nss-tools-3.19.1-4.el5_11.i386.rpm

ia64:
nss-3.19.1-4.el5_11.i386.rpm
nss-3.19.1-4.el5_11.ia64.rpm
nss-debuginfo-3.19.1-4.el5_11.i386.rpm
nss-debuginfo-3.19.1-4.el5_11.ia64.rpm
nss-devel-3.19.1-4.el5_11.ia64.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.ia64.rpm
nss-tools-3.19.1-4.el5_11.ia64.rpm

ppc:
nss-3.19.1-4.el5_11.ppc.rpm
nss-3.19.1-4.el5_11.ppc64.rpm
nss-debuginfo-3.19.1-4.el5_11.ppc.rpm
nss-debuginfo-3.19.1-4.el5_11.ppc64.rpm
nss-devel-3.19.1-4.el5_11.ppc.rpm
nss-devel-3.19.1-4.el5_11.ppc64.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.ppc.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.ppc64.rpm
nss-tools-3.19.1-4.el5_11.ppc.rpm

s390x:
nss-3.19.1-4.el5_11.s390.rpm
nss-3.19.1-4.el5_11.s390x.rpm
nss-debuginfo-3.19.1-4.el5_11.s390.rpm
nss-debuginfo-3.19.1-4.el5_11.s390x.rpm
nss-devel-3.19.1-4.el5_11.s390.rpm
nss-devel-3.19.1-4.el5_11.s390x.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.s390.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.s390x.rpm
nss-tools-3.19.1-4.el5_11.s390x.rpm

x86_64:
nss-3.19.1-4.el5_11.i386.rpm
nss-3.19.1-4.el5_11.x86_64.rpm
nss-debuginfo-3.19.1-4.el5_11.i386.rpm
nss-debuginfo-3.19.1-4.el5_11.x86_64.rpm
nss-devel-3.19.1-4.el5_11.i386.rpm
nss-devel-3.19.1-4.el5_11.x86_64.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.i386.rpm
nss-pkcs11-devel-3.19.1-4.el5_11.x86_64.rpm
nss-tools-3.19.1-4.el5_11.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2016-1950
https://access.redhat.com/security/updates/classification/#critical
https://www.mozilla.org/en-US/security/advisories/mfsa2016-36

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2016 Red Hat, Inc.
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