CVE-2021-38501
Mozilla Firefox Memory Corruption Arbitrary Code Execution Vulnerabilities
Description
Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.
INFO
Published Date :
Nov. 3, 2021, 1:15 a.m.
Last Modified :
Nov. 21, 2024, 6:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2021-38501
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Firefox to version 93.0 or later.
- Update Thunderbird to version 91.2 or later.
- Update affected packages to resolve this vulnerability.
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-2021-38501.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/buglist.cgi?bug_id=1685354%2C1715755%2C1723176 | Broken Link |
| https://www.mozilla.org/security/advisories/mfsa2021-43/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-45/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-47/ | Vendor Advisory |
| https://bugzilla.mozilla.org/buglist.cgi?bug_id=1685354%2C1715755%2C1723176 | Broken Link |
| https://www.mozilla.org/security/advisories/mfsa2021-43/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-45/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-47/ | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-38501 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-2021-38501
weaknesses.
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-2021-38501 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-38501 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://bugzilla.mozilla.org/buglist.cgi?bug_id=1685354%2C1715755%2C1723176 Added Reference https://www.mozilla.org/security/advisories/mfsa2021-43/ Added Reference https://www.mozilla.org/security/advisories/mfsa2021-45/ Added Reference https://www.mozilla.org/security/advisories/mfsa2021-47/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Nov. 04, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Changed Reference Type https://bugzilla.mozilla.org/buglist.cgi?bug_id=1685354%2C1715755%2C1723176 No Types Assigned https://bugzilla.mozilla.org/buglist.cgi?bug_id=1685354%2C1715755%2C1723176 Broken Link Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-43/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-43/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-45/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-45/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-47/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-47/ Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 93.0 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 91.2 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 91.2
Vulnerability Scoring Details
Base CVSS Score: 8.8
Base CVSS Score: 6.8
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.88 }} 0.23%
score
0.74378
percentile