CVE-2023-4641
shadow-utils: possible password leak during passwd(1) change
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 17, 2023
Updated · November 21, 2025
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.
Statement
This vulnerability is classified as low severity despite of confidentiality is high because it requires an attacker to have elevated access privileges to exploit the issue, an attacker must already have significant access to the system to retrieve the password from memory. Additionally, the issue is limited to specific scenarios where a password attempt fails, which reduces its overall risk.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE-303 · Incorrect Implementation of Authentication Algorithm