Critical severity · published Sep 27, 2023
CVE-2023-5176
Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2
9.8
CVSS
1.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 118 · source: NVD
DL
Debian Linux · Debian
10.0; 11.0; 12.0 · source: NVD
FE
Firefox Esr · Mozilla
before 115.3 · source: NVD
TH
Thunderbird · Mozilla
before 115.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-5176
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-5176
Broken Link
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1836353%2C1842674%2C1843824%2C1843962%2C1848890%2C1850180%2C1850983%2C1851195
Mailing List
https://lists.debian.org/debian-lts-announce/2023/09/msg00034.html
Mailing List
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/
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