CVE-2016-1974

Mozilla: Out-of-bounds read in HTML parser following a failed allocation (MFSA 2016-34)

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The nsScannerString::AppendUnicodeTo function in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 does not verify that memory allocation succeeds, which allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) via crafted Unicode data in an HTML, XML, or SVG document.

La función nsScannerString::AppendUnicodeTo en Mozilla Firefox en versiones anteriores a 45.0 y Firefox ESR 38.x en versiones anteriores a 38.7 no verifica que la asignación de memoria tenga éxito, lo que permite a atacantes remotos ejecutar código arbitrario o causar una denegación de servicio (lectura fuera de rango) a través de datos Unicode manipulados en un documento HTML, XML o SVG.

Francis Gabriel discovered a buffer overflow during ASN.1 decoding in NSS. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. Bob Clary, Christoph Diehl, Christian Holler, Andrew McCreight, Daniel Holbert, Jesse Ruderman, Randell Jesup, Carsten Book, Gian-Carlo Pascutto, Tyson Smith, Andrea Marchesini, and Jukka Jylanki discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-01-20 CVE Reserved
2016-03-09 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (24)

URL	Tag	Source
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html	Third Party Advisory
http://www.securitytracker.com/id/1035215	Vdb Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1228103	Issue Tracking

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00027.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00029.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00031.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00050.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00068.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00089.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00091.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00093.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00006.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00007.html	2019-12-27
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00008.html	2019-12-27
http://www.debian.org/security/2016/dsa-3510	2019-12-27
http://www.debian.org/security/2016/dsa-3520	2019-12-27
http://www.mozilla.org/security/announce/2016/mfsa2016-34.html	2019-12-27
http://www.ubuntu.com/usn/USN-2917-1	2019-12-27
http://www.ubuntu.com/usn/USN-2917-2	2019-12-27
http://www.ubuntu.com/usn/USN-2917-3	2019-12-27
http://www.ubuntu.com/usn/USN-2934-1	2019-12-27
https://security.gentoo.org/glsa/201605-06	2019-12-27
https://access.redhat.com/security/cve/CVE-2016-1974	2016-03-16
https://bugzilla.redhat.com/show_bug.cgi?id=1315785	2016-03-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Firefox Search vendor "Mozilla" for product "Firefox"				<= 44.0.2 Search vendor "Mozilla" for product "Firefox" and version " <= 44.0.2"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.0 Search vendor "Mozilla" for product "Firefox Esr" and version "38.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.0.1 Search vendor "Mozilla" for product "Firefox Esr" and version "38.0.1"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.0.5 Search vendor "Mozilla" for product "Firefox Esr" and version "38.0.5"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.1.0 Search vendor "Mozilla" for product "Firefox Esr" and version "38.1.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.1.1 Search vendor "Mozilla" for product "Firefox Esr" and version "38.1.1"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.2.0 Search vendor "Mozilla" for product "Firefox Esr" and version "38.2.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.2.1 Search vendor "Mozilla" for product "Firefox Esr" and version "38.2.1"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.3.0 Search vendor "Mozilla" for product "Firefox Esr" and version "38.3.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.4.0 Search vendor "Mozilla" for product "Firefox Esr" and version "38.4.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.5.0 Search vendor "Mozilla" for product "Firefox Esr" and version "38.5.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.5.1 Search vendor "Mozilla" for product "Firefox Esr" and version "38.5.1"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.6.0 Search vendor "Mozilla" for product "Firefox Esr" and version "38.6.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.6.1 Search vendor "Mozilla" for product "Firefox Esr" and version "38.6.1"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				<= 38.6.0 Search vendor "Mozilla" for product "Thunderbird" and version " <= 38.6.0"		-		Affected
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				5.0 Search vendor "Oracle" for product "Linux" and version "5.0"		-		Affected
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				6 Search vendor "Oracle" for product "Linux" and version "6"		-		Affected
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				7 Search vendor "Oracle" for product "Linux" and version "7"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				42.1 Search vendor "Opensuse" for product "Leap" and version "42.1"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				13.1 Search vendor "Opensuse" for product "Opensuse" and version "13.1"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				13.2 Search vendor "Opensuse" for product "Opensuse" and version "13.2"		-		Affected
Suse Search vendor "Suse"		Linux Enterprise Search vendor "Suse" for product "Linux Enterprise"				12.0 Search vendor "Suse" for product "Linux Enterprise" and version "12.0"		-		Affected