Vulnerability Details : CVE-2021-23981
A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2021-23981
Probability of exploitation activity in the next 30 days: 0.26%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 63 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-23981
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:P |
8.6
|
4.9
|
NIST |
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
2.8
|
5.2
|
NIST |
CWE ids for CVE-2021-23981
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-23981
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1692832
Access DeniedIssue Tracking
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https://www.mozilla.org/security/advisories/mfsa2021-12/
Security Vulnerabilities fixed in Thunderbird 78.9 — MozillaVendor Advisory
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https://www.mozilla.org/security/advisories/mfsa2021-11/
Security Vulnerabilities fixed in Firefox ESR 78.9 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-10/
Security Vulnerabilities fixed in Firefox 87 — MozillaVendor Advisory
Products affected by CVE-2021-23981
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*