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CVE-2021-23983

Date: March 31, 2021

By causing a transition on a parent node by removing a CSS rule, an invalid property for a marker could have been applied, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 87.

Severity Score

Related Resources (7)

https://security.alpinelinux.org/vuln/CVE-2021-23983
https://bugzilla.mozilla.org/show_bug.cgi?id=1692684
https://nvd.nist.gov/vuln/detail/CVE-2021-23983
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-23983
https://security.gentoo.org/glsa/202104-10
https://www.mozilla.org/security/advisories/mfsa2021-10/
https://www.mend.io/vulnerability-database/CVE-2021-23983

Severity Score

Weakness Type (CWE)

Buffer Errors

CWE-119

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): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

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

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