Medium severity · published Sep 11, 2023
CVE-2023-4581
Excel `.xll` add-in files did not have a blocklist entry in Firefox's executable blocklist which allowed them to be downloaded without any warning of their potential harm
4.3
CVSS
0.6%
EPSS
No
On KEV
Description
Excel `.xll` add-in files did not have a blocklist entry in Firefox's executable blocklist which allowed them to be downloaded without any warning of their potential harm. This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Thunderbird < 102.15, and Thunderbird < 115.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 117.0; 115.0 before 115.2 · source: NVD
FE
Firefox Esr · Mozilla
before 102.15 · source: NVD
TH
Thunderbird · Mozilla
before 115.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4581
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4581
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1843758
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-34/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-35/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-36/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-37/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-38/
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