Cyber Resilience

CVE-2021-35939

MediumPublic PoC

Published: 26 August 2022

Published
26 August 2022
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0020 42.3th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-35939 is a medium-severity Link Following (CWE-59) vulnerability in Rpm Rpm. Its CVSS base score is 6.7 (Medium).

Operationally, ranked at the 42.3th 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

It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this…

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flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CWE(s)
CWE-59

Related Threats

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

Affected Assets

rpm
rpm
≤ 4.18
redhat
enterprise linux
8.0

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References