Cyber Resilience

CVE-2021-4241

LowPublic PoC

Published: 15 November 2022

Published
15 November 2022
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 2.6 CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.0029 53.2th percentile
Risk Priority 5 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-4241 is a low-severity Insufficient Entropy (CWE-331) vulnerability in Phpservermonitor Php Server Monitor. Its CVSS base score is 2.6 (Low).

Operationally, ranked in the top 46.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

A vulnerability, which was classified as problematic, was found in phpservermon. Affected is the function setUserLoggedIn of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public…

more

and may be used. The name of the patch is bb10a5f3c68527c58073258cb12446782d223bc3. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-213744.

CWE(s)

Related Threats

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

Affected Assets

phpservermonitor
php server monitor
all versions

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.

addresses: CWE-330 CWE-331

Key generation under controlled management uses approved random-bit sources rather than insufficiently random values.

References