VulnerabilityModified
CVE-2023-6205
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.
MEDIUM 6.5EPSS 0.87%
Does this matter?
Lower severity and a low EPSS score (0.87%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.87% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird · debian/debian linux
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1854076Issue Tracking, Permissions Required
- https://lists.debian.org/debian-lts-announce/2023/11/msg00017.htmlMailing List
- https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
- https://www.debian.org/security/2023/dsa-5561Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-49/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-50/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-52/Release Notes, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1854076Issue Tracking, Permissions Required
- https://lists.debian.org/debian-lts-announce/2023/11/msg00017.htmlMailing List
- https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
- https://www.debian.org/security/2023/dsa-5561Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-49/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-50/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-52/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.