CVE-2021-23973
Mozilla Firefox and Thunderbird Audio/Video Cross-Origin Information Disclosure
Description
When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
INFO
Published Date :
Feb. 26, 2021, 2:15 a.m.
Last Modified :
May 27, 2022, 6:04 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-23973
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.
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-2021-23973.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1690976 | Issue Tracking Permissions Required Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202104-09 | Third Party Advisory |
| https://security.gentoo.org/glsa/202104-10 | Third Party Advisory |
| https://www.debian.org/security/2021/dsa-4866 | Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-07/ | Release Notes Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-08/ | Release Notes Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-09/ | Release Notes 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-2021-23973 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-23973 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]
May. 27, 2022
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202104-09 No Types Assigned https://security.gentoo.org/glsa/202104-09 Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202104-10 No Types Assigned https://security.gentoo.org/glsa/202104-10 Third Party Advisory -
CVE Modified by [email protected]
May. 01, 2021
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202104-09 [No Types Assigned] Added Reference https://security.gentoo.org/glsa/202104-10 [No Types Assigned] -
Reanalysis by [email protected]
Mar. 03, 2021
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Mar. 03, 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:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1690976 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1690976 Issue Tracking, Permissions Required, Vendor Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4866 No Types Assigned https://www.debian.org/security/2021/dsa-4866 Third Party Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-07/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-07/ Release Notes, Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-08/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-08/ Release Notes, Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-09/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-09/ Release Notes, Vendor Advisory Added CWE NIST CWE-209 Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 86.0 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 78.8 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 78.8 -
CVE Modified by [email protected]
Mar. 02, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4866 [No Types Assigned] -
CVE Modified by [email protected]
Mar. 01, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-23973 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-2021-23973
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.08 }} -0.16%
score
0.84482
percentile