🛡️ CVE-2023-5171
🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-416 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE CWE-416
Public Exploit ✅ No
Source NVD
Published 2023-09-27
Updated 2026-06-08
Modified 2024-11-21

Affected Packages

Software From version Fixed in
debian-linux
fedora
firefox 118
firefox-esr 115.3
thunderbird 115.3

References

Issue Tracking, Permissions Required https://bugzilla.mozilla.org/show_bug.cgi?id=1851599
Mailing List, Patch, Third Party Advisory https://lists.debian.org/debian-lts-announce/2023/09/msg00034.html
Patch, Third Party Advisory https://www.debian.org/security/2023/dsa-5506
Issue Tracking, Permissions Required https://bugzilla.mozilla.org/show_bug.cgi?id=1851599
Mailing List, Patch, Third Party Advisory https://lists.debian.org/debian-lts-announce/2023/09/msg00034.html
Patch, Third Party Advisory https://www.debian.org/security/2023/dsa-5506

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