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CVE-2021-29990

Date: August 17, 2021

Mozilla developers and community members reported memory safety bugs present in Firefox 90. 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 Firefox < 91.

Severity Score

Related Resources (7)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-29990
https://security.gentoo.org/glsa/202202-03
https://nvd.nist.gov/vuln/detail/CVE-2021-29990
https://www.mozilla.org/security/advisories/mfsa2021-33/
https://security.alpinelinux.org/vuln/CVE-2021-29990
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1544190%2C1716481%2C1717778%2C1719319%2C1722073
https://www.mend.io/vulnerability-database/CVE-2021-29990

Severity Score

Weakness Type (CWE)

Buffer Errors

CWE-119

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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