7.5
HIGH
CVE-2016-2821
Mozilla Firefox Use-After-Free Attack
Description

Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.

INFO

Published Date :

June 13, 2016, 10:59 a.m.

Last Modified :

Oct. 22, 2024, 1:54 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

1.6
Affected Products

The following products are affected by CVE-2016-2821 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mozilla firefox
2 Mozilla firefox_esr
1 Opensuse leap
2 Opensuse opensuse
1 Canonical ubuntu_linux
1 Debian debian_linux

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-2821 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-2821 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CPE Deprecation Remap by [email protected]

    Oct. 22, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:mozilla:firefox_esr:45.1.0:*:*:*:*:*:*:* OR *cpe:2.3:a:mozilla:firefox:45.1.0:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 21, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:mozilla:firefox_esr:45.1.1:*:*:*:*:*:*:* OR *cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    Oct. 30, 2018

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:novell:opensuse:13.2:*:*:*:*:*:*:* OR *cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 30, 2018

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:novell:opensuse:13.1:*:*:*:*:*:*:* OR *cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 30, 2018

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:novell:leap:42.1:*:*:*:*:*:*:* OR *cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/91075 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 04, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
  • CVE Modified by [email protected]

    Jul. 27, 2016

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html
  • CVE Modified by [email protected]

    Jul. 14, 2016

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2016:1217
  • Modified Analysis by [email protected]

    Jun. 19, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:mozilla:firefox:46.0.1:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:a:mozilla:firefox_esr:45.1.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:firefox_esr:45.1.1:*:*:*:*:*:*:* Configuration 1 OR *cpe:2.3:a:mozilla:firefox:46.0.1:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:a:mozilla:firefox_esr:45.1.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:firefox_esr:45.1.1:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Configuration 4 OR *cpe:2.3:o:novell:opensuse:13.2:*:*:*:*:*:*:* *cpe:2.3:o:novell:opensuse:13.1:*:*:*:*:*:*:* *cpe:2.3:o:novell:leap:42.1:*:*:*:*:*:*:* Configuration 5 OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
    Removed CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CVSS V3 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE Modified by [email protected]

    Jun. 17, 2016

    Action Type Old Value New Value
    Added Reference http://www.debian.org/security/2016/dsa-3600
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html
    Added Reference http://www.ubuntu.com/usn/USN-2993-1
    Added Reference http://www.securitytracker.com/id/1036057
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html
  • Modified Analysis by [email protected]

    Jun. 16, 2016

    Action Type Old Value New Value
    Added Evaluator Description <a href="http://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a>
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:mozilla:firefox:46.0.1:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:a:mozilla:firefox_esr:45.1.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:firefox_esr:45.1.1:*:*:*:*:*:*:*
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.mozilla.org/security/announce/2016/mfsa2016-51.html No Types Assigned http://www.mozilla.org/security/announce/2016/mfsa2016-51.html Advisory
    Added CWE NVD-CWE-Other
  • Initial Analysis by [email protected]

    Jun. 13, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-2821 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-2821 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.40 }} 0.05%

score

0.90016

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability