Vulnerability Details : CVE-2021-38500
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 Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-38500
- 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:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-38500
0.20%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 59 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-38500
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
References for CVE-2021-38500
-
https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
[SECURITY] [DLA 2874-1] thunderbird security updateMailing List;Third Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-44/
Security Vulnerabilities fixed in Firefox ESR 78.15 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-46/
404: Page Not FoundVendor Advisory
-
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1725854%2C1728321
Bug ListBroken Link;Issue Tracking
-
https://www.mozilla.org/security/advisories/mfsa2021-43/
Security Vulnerabilities fixed in Firefox 93 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-47/
Security Vulnerabilities fixed in Thunderbird 91.2 — MozillaVendor Advisory
-
https://www.debian.org/security/2022/dsa-5034
Debian -- Security Information -- DSA-5034-1 thunderbirdIssue Tracking;Third Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-45/
Security Vulnerabilities fixed in Firefox ESR 91.2 — MozillaVendor Advisory
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