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CVE

CVE-2023-4641

A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password

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.

MEDIUM · CVSS 4.7 EPSS 0.00015
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
CWE-303Incorrect Implementation of Authentication Algorithm
▤

Affected Products & Versions

9
shadow-maint shadow-utils< 4.14.0
redhat codeready linux builderall versions
redhat codeready linux builder for arm64all versions
redhat codeready linux builder for ibm z systemsall versions
redhat codeready linux builder for power little endianall versions
redhat enterprise linuxall versions
redhat enterprise linux for arm 64all versions
redhat enterprise linux for ibm z systemsall versions
▣

Scoring & Timeline

4.7
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Dec 2023 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

17
suse-csafsuse-ru-2026_1228-1
suse-csafopenSUSE-SU-2026:10081-1
siemens-csafSSA-202008
msrcCVE-2023-4641
suse-csafSUSE-SU-2024:1007-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2023-4641Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2215945Issue Tracking
https://lists.debian.org/debian-lts-announce/2025/04/msg00026.html
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