Cyber Resilience

CVE-2023-43761

HighDDoS

Published: 22 September 2023

Published
22 September 2023
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0029 52.4th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-43761 is a high-severity Infinite Loop (CWE-835) vulnerability in F-Secure Client Security. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 47.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Certain WithSecure products allow Denial of Service (infinite loop). This affects WithSecure Client Security 15, WithSecure Server Security 15, WithSecure Email and Server Security 15, WithSecure Elements Endpoint Protection 17 and later, WithSecure Client Security for Mac 15, WithSecure Elements…

more

Endpoint Protection for Mac 17 and later, Linux Security 64 12.0 , Linux Protection 12.0, and WithSecure Atlant (formerly F-Secure Atlant) 1.0.35-1.

CWE(s)
CWE-835

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

f-secure
linux protection
12.0
f-secure
linux security 64
12.0
f-secure
atlant
1.0.35-1
f-secure
client security
15.00
f-secure
elements endpoint protection
≥ 17.0 · ≥ 17.0
f-secure
email and server security
15.00
f-secure
server security
15.00

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CP-7 Alternate Processing Site
addresses: CWE-835

Enables transfer to alternate site if an infinite loop at the primary renders processing unavailable.

SC-5 Denial-of-service Protection
addresses: CWE-835

Detects and mitigates infinite loops that produce sustained resource consumption.

References