CVE-2021-38509
Mozilla Firefox/Cross-Site Scripting
Description
Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
INFO
Published Date :
Dec. 8, 2021, 10:15 p.m.
Last Modified :
Dec. 9, 2022, 3:22 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-38509
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-2021-38509.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1718571 | Issue Tracking Permissions Required Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202202-03 | Third Party Advisory |
| https://security.gentoo.org/glsa/202208-14 | Third Party Advisory |
| https://www.debian.org/security/2021/dsa-5026 | Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5034 | Mailing List Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-48/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-49/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-50/ | 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-2021-38509 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-38509 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]
Dec. 09, 2022
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202208-14 No Types Assigned https://security.gentoo.org/glsa/202208-14 Third Party Advisory -
CVE Modified by [email protected]
Aug. 10, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202208-14 [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 16, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202202-03 No Types Assigned https://security.gentoo.org/glsa/202202-03 Third Party Advisory Changed Reference Type https://www.debian.org/security/2022/dsa-5034 No Types Assigned https://www.debian.org/security/2022/dsa-5034 Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 22, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202202-03 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 04, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html [No Types Assigned] -
CVE Modified by [email protected]
Jan. 03, 2022
Action Type Old Value New Value Added Reference https://www.debian.org/security/2022/dsa-5034 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 29, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html [No Types Assigned] -
Modified Analysis by [email protected]
Dec. 21, 2021
Action Type Old Value New Value Changed Reference Type https://www.debian.org/security/2021/dsa-5026 No Types Assigned https://www.debian.org/security/2021/dsa-5026 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 20, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-5026 [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 10, 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:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1718571 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1718571 Issue Tracking, Permissions Required, Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-48/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-48/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-49/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-49/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-50/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-50/ Vendor Advisory Added CWE NIST CWE-1021 Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 94.0 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 91.3.0 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 91.3.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-38509 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-2021-38509
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.62 }} 0.18%
score
0.79273
percentile