Information disclosure in Kernel Util-Linux

CVE-2022-0563

A flaw was found in the 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. This flaw affects util-linux versions prior to 2.37.4.

EPSS: 0.004 (36.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-0563?
CVE-2022-0563 is a medium-severity vulnerability in Kernel Util-Linux, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.5/10. Published 2022-02-21.
How severe is CVE-2022-0563?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2022-0563 known to be exploited?
30 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.