Cyber Resilience

CVE-2021-31798

MediumPublic PoC

Published: 02 September 2021

Published
02 September 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0011 29.5th percentile
Risk Priority 9 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-31798 is a medium-severity Insufficient Entropy (CWE-331) vulnerability in Cyberark Credential Provider. Its CVSS base score is 4.4 (Medium).

Operationally, ranked at the 29.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

The effective key space used to encrypt the cache in CyberArk Credential Provider prior to 12.1 has low entropy, and under certain conditions a local malicious user can obtain the plaintext of cache files.

CWE(s)
CWE-331

Related Threats

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

Affected Assets

cyberark
credential provider
≤ 12.1

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.

SC-12 Cryptographic Key Establishment and Management
addresses: CWE-331

Approved key-establishment methods mandate sufficient entropy during key generation, eliminating entropy-starved keys.

References