Vulnerability Details : CVE-2021-43541
When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Exploit prediction scoring system (EPSS) score for CVE-2021-43541
Probability of exploitation activity in the next 30 days: 0.24%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 61 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-43541
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
[email protected] |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
[email protected] |
References for CVE-2021-43541
-
https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
Mailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html
Mailing List;Third Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-53/
Vendor Advisory
-
https://www.debian.org/security/2021/dsa-5026
Third Party Advisory
-
https://security.gentoo.org/glsa/202202-03
Third Party Advisory
-
https://www.debian.org/security/2022/dsa-5034
Third Party Advisory
-
https://security.gentoo.org/glsa/202208-14
Third Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-54/
Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-52/
Vendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1696685
Issue Tracking;Permissions Required;Vendor Advisory
Products affected by CVE-2021-43541
- 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:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*