High severity · published Jan 23, 2024
CVE-2024-0743
An unchecked return value in TLS handshake code could have caused a potentially exploitable crash
7.5
CVSS
1.3%
EPSS
No
On KEV
Description
An unchecked return value in TLS handshake code could have caused a potentially exploitable crash. This vulnerability affects Firefox < 122, Firefox ESR < 115.9, and Thunderbird < 115.9.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 122 · source: vendor, NVD
FE
Firefox ESR · Mozilla
before 115.9 · source: vendor
TH
Thunderbird · Mozilla
before 115.9 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-0743
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-0743
Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1867408
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/03/msg00010.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/03/msg00022.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/03/msg00028.html
Release Notes
https://www.mozilla.org/security/advisories/mfsa2024-01/
www.mozilla.org
https://www.mozilla.org/security/advisories/mfsa2024-13/
More from Firefox
10.0
CVE-2019-11708
Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability
9.8
CVE-2024-9680
Mozilla Firefox Use-After-Free Vulnerability
9.8
CVE-2010-3765
Mozilla Multiple Products Remote Code Execution Vulnerability
9.6
CVE-2022-26486
Mozilla Firefox Use-After-Free Vulnerability
8.8
CVE-2023-5217
Google Chromium libvpx Heap Buffer Overflow Vulnerability