CVE-2023-5176
CRITICALFirefox < 118, Firefox ESR < 115.3, Thunderbird < 115.3 - Out-of-bounds Write
Title source: llmDescription
Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
References (8)
Core 8
Core References
Broken Link, Issue Tracking, Permissions Required
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1836353%2C1842674%2C1843824%2C1843962%2C1848890%2C1850180%2C1850983%2C1851195
Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00034.html
Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00015.html
Third Party Advisory
https://www.debian.org/security/2023/dsa-5506
Third Party Advisory
https://www.debian.org/security/2023/dsa-5513
Vendor 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/
Scores
CVSS v3
9.8
EPSS
0.0070
EPSS Percentile
72.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-787
Status
published
Products (6)
debian/debian_linux
10.0
debian/debian_linux
11.0
debian/debian_linux
12.0
mozilla/firefox
< 118
mozilla/firefox_esr
< 115.3
mozilla/thunderbird
< 115.3
Published
Sep 27, 2023
Tracked Since
Feb 18, 2026