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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:  1035676
SecurityTracker URL:  http://securitytracker.com/id/1035676
CVE Reference:   CVE-2016-1979   (Links to External Site)
Date:  Apr 25 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-2016-1979 for Network Security Services (NSS).

The Red Hat advisory is available at:

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

Vendor URL:  rhn.redhat.com/errata/RHSA-2016-0684.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-2016:0684-01] Moderate: nss and nspr security, bug fix, and enhancement update

-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: nss and nspr security, bug fix, and enhancement update
Advisory ID:       RHSA-2016:0684-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-0684.html
Issue date:        2016-04-25
CVE Names:         CVE-2016-1978 CVE-2016-1979 
=====================================================================

1. Summary:

An update for nss and nspr is now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) 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. Netscape Portable Runtime (NSPR) provides platform
independence for non-GUI operating system facilities.

The following packages have been upgraded to a newer upstream version: nss
3.21.0, nspr 4.11.0. (BZ#1297944, BZ#1297943)

Security Fix(es):

* A use-after-free flaw was found in the way NSS handled DHE
(Diffie-Hellman key exchange) and ECDHE (Elliptic Curve Diffie-Hellman key
exchange) handshake messages. A remote attacker could send a specially
crafted handshake message that, when parsed by an application linked
against NSS, would cause that application to crash or, under certain
special conditions, execute arbitrary code using the permissions of the
user running the application. (CVE-2016-1978)

* 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. (CVE-2016-1979)

Red Hat would like to thank the Mozilla project for reporting these issues.
Upstream acknowledges Eric Rescorla as the original reporter of
CVE-2016-1978; and Tim Taubert as the original reporter of CVE-2016-1979.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

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

After installing this update, applications using NSS or NSPR (for example,
Firefox) must be restarted for this update to take effect.

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

1297943 - Rebase RHEL 5.11.z to NSPR 4.11 in preparation for Firefox 45.
1297944 - Rebase RHEL 5.11.z to NSS 3.21 in preparation for Firefox 45.
1315202 - CVE-2016-1979 nss: Use-after-free during processing of DER encoded keys in NSS (MFSA 2016-36)
1315565 - CVE-2016-1978 nss: Use-after-free in NSS during SSL connections in low memory (MFSA 2016-15)

6. Package List:

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

Source:
nspr-4.11.0-1.el5_11.src.rpm
nss-3.21.0-6.el5_11.src.rpm

i386:
nspr-4.11.0-1.el5_11.i386.rpm
nspr-debuginfo-4.11.0-1.el5_11.i386.rpm
nss-3.21.0-6.el5_11.i386.rpm
nss-debuginfo-3.21.0-6.el5_11.i386.rpm
nss-tools-3.21.0-6.el5_11.i386.rpm

x86_64:
nspr-4.11.0-1.el5_11.i386.rpm
nspr-4.11.0-1.el5_11.x86_64.rpm
nspr-debuginfo-4.11.0-1.el5_11.i386.rpm
nspr-debuginfo-4.11.0-1.el5_11.x86_64.rpm
nss-3.21.0-6.el5_11.i386.rpm
nss-3.21.0-6.el5_11.x86_64.rpm
nss-debuginfo-3.21.0-6.el5_11.i386.rpm
nss-debuginfo-3.21.0-6.el5_11.x86_64.rpm
nss-tools-3.21.0-6.el5_11.x86_64.rpm

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

Source:
nspr-4.11.0-1.el5_11.src.rpm
nss-3.21.0-6.el5_11.src.rpm

i386:
nspr-debuginfo-4.11.0-1.el5_11.i386.rpm
nspr-devel-4.11.0-1.el5_11.i386.rpm
nss-debuginfo-3.21.0-6.el5_11.i386.rpm
nss-devel-3.21.0-6.el5_11.i386.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.i386.rpm

x86_64:
nspr-debuginfo-4.11.0-1.el5_11.i386.rpm
nspr-debuginfo-4.11.0-1.el5_11.x86_64.rpm
nspr-devel-4.11.0-1.el5_11.i386.rpm
nspr-devel-4.11.0-1.el5_11.x86_64.rpm
nss-debuginfo-3.21.0-6.el5_11.i386.rpm
nss-debuginfo-3.21.0-6.el5_11.x86_64.rpm
nss-devel-3.21.0-6.el5_11.i386.rpm
nss-devel-3.21.0-6.el5_11.x86_64.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.i386.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
nspr-4.11.0-1.el5_11.src.rpm
nss-3.21.0-6.el5_11.src.rpm

i386:
nspr-4.11.0-1.el5_11.i386.rpm
nspr-debuginfo-4.11.0-1.el5_11.i386.rpm
nspr-devel-4.11.0-1.el5_11.i386.rpm
nss-3.21.0-6.el5_11.i386.rpm
nss-debuginfo-3.21.0-6.el5_11.i386.rpm
nss-devel-3.21.0-6.el5_11.i386.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.i386.rpm
nss-tools-3.21.0-6.el5_11.i386.rpm

ia64:
nspr-4.11.0-1.el5_11.i386.rpm
nspr-4.11.0-1.el5_11.ia64.rpm
nspr-debuginfo-4.11.0-1.el5_11.i386.rpm
nspr-debuginfo-4.11.0-1.el5_11.ia64.rpm
nspr-devel-4.11.0-1.el5_11.ia64.rpm
nss-3.21.0-6.el5_11.i386.rpm
nss-3.21.0-6.el5_11.ia64.rpm
nss-debuginfo-3.21.0-6.el5_11.i386.rpm
nss-debuginfo-3.21.0-6.el5_11.ia64.rpm
nss-devel-3.21.0-6.el5_11.ia64.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.ia64.rpm
nss-tools-3.21.0-6.el5_11.ia64.rpm

ppc:
nspr-4.11.0-1.el5_11.ppc.rpm
nspr-4.11.0-1.el5_11.ppc64.rpm
nspr-debuginfo-4.11.0-1.el5_11.ppc.rpm
nspr-debuginfo-4.11.0-1.el5_11.ppc64.rpm
nspr-devel-4.11.0-1.el5_11.ppc.rpm
nspr-devel-4.11.0-1.el5_11.ppc64.rpm
nss-3.21.0-6.el5_11.ppc.rpm
nss-3.21.0-6.el5_11.ppc64.rpm
nss-debuginfo-3.21.0-6.el5_11.ppc.rpm
nss-debuginfo-3.21.0-6.el5_11.ppc64.rpm
nss-devel-3.21.0-6.el5_11.ppc.rpm
nss-devel-3.21.0-6.el5_11.ppc64.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.ppc.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.ppc64.rpm
nss-tools-3.21.0-6.el5_11.ppc.rpm

s390x:
nspr-4.11.0-1.el5_11.s390.rpm
nspr-4.11.0-1.el5_11.s390x.rpm
nspr-debuginfo-4.11.0-1.el5_11.s390.rpm
nspr-debuginfo-4.11.0-1.el5_11.s390x.rpm
nspr-devel-4.11.0-1.el5_11.s390.rpm
nspr-devel-4.11.0-1.el5_11.s390x.rpm
nss-3.21.0-6.el5_11.s390.rpm
nss-3.21.0-6.el5_11.s390x.rpm
nss-debuginfo-3.21.0-6.el5_11.s390.rpm
nss-debuginfo-3.21.0-6.el5_11.s390x.rpm
nss-devel-3.21.0-6.el5_11.s390.rpm
nss-devel-3.21.0-6.el5_11.s390x.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.s390.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.s390x.rpm
nss-tools-3.21.0-6.el5_11.s390x.rpm

x86_64:
nspr-4.11.0-1.el5_11.i386.rpm
nspr-4.11.0-1.el5_11.x86_64.rpm
nspr-debuginfo-4.11.0-1.el5_11.i386.rpm
nspr-debuginfo-4.11.0-1.el5_11.x86_64.rpm
nspr-devel-4.11.0-1.el5_11.i386.rpm
nspr-devel-4.11.0-1.el5_11.x86_64.rpm
nss-3.21.0-6.el5_11.i386.rpm
nss-3.21.0-6.el5_11.x86_64.rpm
nss-debuginfo-3.21.0-6.el5_11.i386.rpm
nss-debuginfo-3.21.0-6.el5_11.x86_64.rpm
nss-devel-3.21.0-6.el5_11.i386.rpm
nss-devel-3.21.0-6.el5_11.x86_64.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.i386.rpm
nss-pkcs11-devel-3.21.0-6.el5_11.x86_64.rpm
nss-tools-3.21.0-6.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-2016-1978
https://access.redhat.com/security/cve/CVE-2016-1979
https://access.redhat.com/security/updates/classification/#moderate

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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