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Vulnerability record · CVE-2023-4641 · published 27 December 2023

CVE-2023-4641: Shadow-maint shadow-utils improper authentication vulnerability

SShadow Maint · Shadow Utils

A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.

5.5 CVSS 3.1 Medium EPSS 0.25% · top 84.8% CWE-303 · CWE-303CWE-287 · Improper authentication
5.5CVSS 3.1 base score
0.25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
13References
17 Jun 2026Last modified by NVD

Description

A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2023:6632 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7112 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0417
https://access.redhat.com/errata/RHSA-2024:2577
https://access.redhat.com/security/cve/CVE-2023-4641 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2215945 Issue Tracking
https://access.redhat.com/errata/RHSA-2023:6632 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7112 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0417
https://access.redhat.com/errata/RHSA-2024:2577
https://access.redhat.com/security/cve/CVE-2023-4641 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2215945 Issue Tracking
https://lists.debian.org/debian-lts-announce/2025/04/msg00026.html

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Source: NIST National Vulnerability Database (record CVE-2023-4641), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.