Critical severity · published Aug 1, 2023
CVE-2023-4056
Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13
9.8
CVSS
0.9%
EPSS
No
On KEV
Description
Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. 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 < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
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)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 116.0; 102.0 before 102.14; 115.0 before 115.1 · source: NVD
DL
Debian Linux · Debian
10.0; 11.0; 12.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4056
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4056
Broken Link
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1820587%2C1824634%2C1839235%2C1842325%2C1843847
Mailing List
https://lists.debian.org/debian-lts-announce/2023/08/msg00008.html
Mailing List
https://lists.debian.org/debian-lts-announce/2023/08/msg00010.html
Mailing List
https://www.debian.org/security/2023/dsa-5464
Mailing List
https://www.debian.org/security/2023/dsa-5469
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-29/
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