Select your cookie preferences

We use cookies and similar tools to enhance your experience, provide our services, deliver relevant advertising, and make improvements. Approved third parties also use these tools to help us deliver advertising and provide certain site features.

CVE-2021-35939

Public on 2022-08-26
Modified on 2024-01-22
Description

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

This issue requires that the attacker have admin privileges on the target system, and be able to own and modify system files. Considering the tradeoff between the stability of Amazon Linux and the impact of CVE-2021-35939 a fix will not be provided for Amazon Linux 1, Amazon Linux 2 and Amazon Linux 2023 at this time.

Severity
Medium
See what this means
CVSS v3 Base Score
6.5
See breakdown
Continue reading

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2023 rpm 2024-03-13 22:20 ALAS2023-2024-573

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.5 CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
NVD CVSSv3 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Red Hat: CVE-2021-35939 Mitre: CVE-2021-35939 FAQs regarding Amazon Linux ALAS/CVE Severity