VulnerabilityModified
CVE-2023-5171
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.
MEDIUM 6.5EPSS 1.03%
Does this matter?
Lower severity and a low EPSS score (1.03%). Track it; it rarely justifies an emergency change on its own.
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.
- 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
- 1.03% probability · 62th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird · debian/debian linux · fedoraproject/fedora
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1851599Issue Tracking, Permissions Required
- https://lists.debian.org/debian-lts-announce/2023/09/msg00034.htmlMailing List, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00015.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AY642Z6JZODQJE7Z62CFREVUHEGCXGPD/Mailing List, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5506Patch, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5513Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-41/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-42/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-43/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1851599Issue Tracking, Permissions Required
- https://lists.debian.org/debian-lts-announce/2023/09/msg00034.htmlMailing List, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00015.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AY642Z6JZODQJE7Z62CFREVUHEGCXGPD/Mailing List, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5506Patch, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5513Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-41/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-42/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-43/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.