9.8
CRITICAL
CVE-2020-12395
Mozilla Firefox & Thunderbird Memory Safety Bugs
Description

Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

INFO

Published Date :

May 26, 2020, 5:15 p.m.

Last Modified :

April 26, 2022, 7:24 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2020-12395 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
3 Mozilla thunderbird
1 Canonical ubuntu_linux
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-12395.

URL Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595886%2C1611482%2C1614704%2C1624098%2C1625749%2C1626382%2C1628076%2C1631508 Broken Link Issue Tracking
https://security.gentoo.org/glsa/202005-03 Third Party Advisory
https://security.gentoo.org/glsa/202005-04 Third Party Advisory
https://usn.ubuntu.com/4373-1/ Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-16/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-17/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-18/ Vendor Advisory

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-2020-12395 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-12395 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.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Apr. 26, 2022

    Action Type Old Value New Value
    Changed Reference Type https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595886%2C1611482%2C1614704%2C1624098%2C1625749%2C1626382%2C1628076%2C1631508 Broken Link https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595886%2C1611482%2C1614704%2C1624098%2C1625749%2C1626382%2C1628076%2C1631508 Broken Link, Issue Tracking
    Changed Reference Type https://security.gentoo.org/glsa/202005-03 No Types Assigned https://security.gentoo.org/glsa/202005-03 Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/202005-04 No Types Assigned https://security.gentoo.org/glsa/202005-04 Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4373-1/ No Types Assigned https://usn.ubuntu.com/4373-1/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-119 CWE-787
  • CVE Modified by [email protected]

    Jun. 12, 2020

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202005-04 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 12, 2020

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202005-03 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 02, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4373-1/ [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595886%2C1611482%2C1614704%2C1624098%2C1625749%2C1626382%2C1628076%2C1631508 No Types Assigned https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595886%2C1611482%2C1614704%2C1624098%2C1625749%2C1626382%2C1628076%2C1631508 Broken Link
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2020-16/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2020-16/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2020-17/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2020-17/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2020-18/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2020-18/ Vendor Advisory
    Added CWE NIST CWE-119
    Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 76.0 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 68.8.0 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 68.8.0
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-2020-12395 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-2020-12395 weaknesses.

Exploit Prediction

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

0.75 }} -0.01%

score

0.81288

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability