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CVE-2022-0563

Public on 2022-02-21
Modified on 2023-01-18
Description

A flaw was found in the Linux kernel's util-linux chfn and chsh utilities when compiled with Readline support. The Readline library uses an INPUTRC environment variable to get a path to the library config file. When the library cannot parse the specified file, it prints an error message containing data from the file. This flaw allows an unprivileged user to read root-owned files, potentially leading to privilege escalation.

Severity
Medium
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CVSS v3 Base Score
5.5
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core util-linux 2022-12-01 20:32 ALAS2-2022-1901
Amazon Linux 2023 util-linux 2023-02-17 20:43 ALAS2023-2023-024

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD CVSSv2 1.9 AV:L/AC:M/Au:N/C:P/I:N/A:N
NVD CVSSv3 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Red Hat: CVE-2022-0563 Mitre: CVE-2022-0563 FAQs regarding Amazon Linux ALAS/CVE Severity