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CVE-2023-4641

Shadow-utils: possible password leak during passwd(1) change

Published: Dec 27, 2023Updated: Nov 3, 2025 Sources: CVE List NVD BDUCWE-303
4.7MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 82.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-303CWE-287

Affected Products

Red Hat Inc.
commercial·USaka Red Hat, redhat
Red Hat Enterprise Linux 8On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.6 Extended Update SupportOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.8 Extended Update SupportOn-premOS
Operating Systems / linux-distro
codeready linux builderOn-prem
Operating Systems / linux-distro
codeready linux builder for arm64On-prem
Operating Systems / linux-distro
codeready linux builder for ibm z systemsOn-prem
Operating Systems / linux-distro
codeready linux builder for power little endianOn-prem
Operating Systems / linux-distro
enterprise linux for arm 64On-prem
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
АО «НТЦ ИТ РОСА»
commercial·RU
РОСА ХРОМOn-prem
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Shadow-utils
OSS Libraries / generic-library
АО «НППКТ»
commercial·RU
ОСОН ОСнова ОnyxOn-premOS
Operating Systems / linux-distro
and 9 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/shadow-maint/shadow/commit/65c88a43a23c2391dcc90c0abda3e839e9c57904
github.com
https://redos.red-soft.ru/support/secure/
redos.red-soft.ru
https://access.redhat.com/security/cve/CVE-2023-4641
access.redhat.com
and 11 more references View all →

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