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CVE-2023-5171

Date: September 27, 2023

During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.

Language: C++

Severity Score

Related Resources (11)

https://nvd.nist.gov/vuln/detail/CVE-2023-5171
https://lists.debian.org/debian-lts-announce/2023/09/msg00034.html
https://www.debian.org/security/2023/dsa-5506
https://lists.debian.org/debian-lts-announce/2023/10/msg00015.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1851599
https://www.mozilla.org/security/advisories/mfsa2023-42/
https://www.mozilla.org/security/advisories/mfsa2023-41/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AY642Z6JZODQJE7Z62CFREVUHEGCXGPD/
https://www.debian.org/security/2023/dsa-5513
https://www.mozilla.org/security/advisories/mfsa2023-43/
https://www.mend.io/vulnerability-database/CVE-2023-5171

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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