Vulnerability Details : CVE-2021-29980
Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2021-29980
Probability of exploitation activity in the next 30 days: 0.81%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 79 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-29980
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
[email protected] |
|
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
|
[email protected] |
CWE ids for CVE-2021-29980
-
The product does not initialize a critical resource.Assigned by: [email protected] (Primary)
References for CVE-2021-29980
-
https://www.mozilla.org/security/advisories/mfsa2021-34/
Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-36/
Vendor Advisory
-
https://security.gentoo.org/glsa/202202-03
Third Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-33/
Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-35/
Vendor Advisory
-
https://security.gentoo.org/glsa/202208-14
Third Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1722204
Exploit;Issue Tracking;Vendor Advisory
Products affected by CVE-2021-29980
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*