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CVE-2021-29952

Date: June 24, 2021

When Web Render components were destructed, a race condition could have caused undefined behavior, and we presume that with enough effort may have been exploitable to run arbitrary code. This vulnerability affects Firefox < 88.0.1 and Firefox for Android < 88.1.3.

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2021-29952
https://www.mozilla.org/security/advisories/mfsa2021-20/
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-29952
https://security.alpinelinux.org/vuln/CVE-2021-29952
https://bugzilla.mozilla.org/show_bug.cgi?id=1704227
https://www.mend.io/vulnerability-database/CVE-2021-29952

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

CVSS v3.1

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

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