CVE-2016-2808

Mozilla: Write to invalid HashMap entry through JavaScript.watch() (MFSA 2016-47)

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The watch implementation in the JavaScript engine in Mozilla Firefox before 46.0, Firefox ESR 38.x before 38.8, and Firefox ESR 45.x before 45.1 allows remote attackers to execute arbitrary code or cause a denial of service (generation-count overflow, out-of-bounds HashMap write access, and application crash) via a crafted web site.

La implementación de watch en el motor JavaScript en Mozilla Firefox en versiones anteriores a 46.0, Firefox ESR 38.x en versiones anteriores a 38.8 y Firefox ESR 45.x en versiones anteriores a 45.1 permite a atacantes remotos ejecutar código arbitrario o provocar una denegación de servicio (desbordamiento de generación de contador, acceso a escritura en HashMap fuera de límites y caída de aplicación) a través de un sitio web manipulado.

USN-2936-1 fixed vulnerabilities in Firefox. The update caused an issue where a device update POST request was sent every time about:preferences#sync was shown. This update fixes the problem. Christian Holler, Tyson Smith, Phil Ringalda, Gary Kwong, Jesse Ruderman, Mats Palmgren, Carsten Book, Boris Zbarsky, David Bolter, Randell Jesup, Andrew McCreight, and Steve Fink 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. An invalid write was discovered when using the JavaScript .watch() method in some circumstances. 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. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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

2016-03-01 CVE Reserved
2016-04-26 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 (17)

URL	Tag	Source
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html	X_refsource_confirm
http://www.securitytracker.com/id/1035692	Vdb Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1246061	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html	2017-07-01
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00023.html	2017-07-01
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00054.html	2017-07-01
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00057.html	2017-07-01
http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html	2017-07-01
http://rhn.redhat.com/errata/RHSA-2016-0695.html	2017-07-01
http://www.debian.org/security/2016/dsa-3559	2017-07-01
http://www.mozilla.org/security/announce/2016/mfsa2016-47.html	2017-07-01
http://www.ubuntu.com/usn/USN-2936-1	2017-07-01
http://www.ubuntu.com/usn/USN-2936-2	2017-07-01
http://www.ubuntu.com/usn/USN-2936-3	2017-07-01
https://security.gentoo.org/glsa/201701-15	2017-07-01
https://access.redhat.com/security/cve/CVE-2016-2808	2016-04-26
https://bugzilla.redhat.com/show_bug.cgi?id=1330286	2016-04-26

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"				<= 45.0.2 Search vendor "Mozilla" for product "Firefox" and version " <= 45.0.2"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Search vendor "Mozilla" for product "Firefox"				45.0.1 Search vendor "Mozilla" for product "Firefox" and version "45.0.1"		-		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"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.7.0 Search vendor "Mozilla" for product "Firefox Esr" and version "38.7.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				38.7.1 Search vendor "Mozilla" for product "Firefox Esr" and version "38.7.1"		-		Affected