Vulnerability Details : CVE-2021-29984
Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led 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
Products affected by CVE-2021-29984
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-29984
1.27%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-29984
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 |
CWE ids for CVE-2021-29984
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-29984
-
https://www.mozilla.org/security/advisories/mfsa2021-34/
Security Vulnerabilities fixed in Firefox ESR 78.13 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-36/
Security Vulnerabilities fixed in Thunderbird 91 — MozillaVendor Advisory
-
https://security.gentoo.org/glsa/202202-03
Mozilla Firefox: Multiple vulnerabilities (GLSA 202202-03) — Gentoo securityThird Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-33/
Security Vulnerabilities fixed in Firefox 91 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-35/
Security Vulnerabilities fixed in Thunderbird 78.13 — MozillaVendor Advisory
-
https://security.gentoo.org/glsa/202208-14
Mozilla Thunderbird: Multiple Vulnerabilities (GLSA 202208-14) — Gentoo securityThird Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1720031
Access DeniedExploit;Issue Tracking;Vendor Advisory
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