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CVE-2023-6205

Date: November 21, 2023

It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

Language: C++

Severity Score

Related Resources (10)

https://nvd.nist.gov/vuln/detail/CVE-2023-6205
https://www.mozilla.org/security/advisories/mfsa2023-49/
https://security-tracker.debian.org/tracker/CVE-2023-6205
https://www.debian.org/security/2023/dsa-5561
https://bugzilla.mozilla.org/show_bug.cgi?id=1854076
https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
https://www.mozilla.org/security/advisories/mfsa2023-50/
https://www.mozilla.org/security/advisories/mfsa2023-52/
https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html
https://www.mend.io/vulnerability-database/CVE-2023-6205

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

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

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