CVE catalog

CVE-2023-4641

shadow: CVE-2023-4641

Severity: Medium · CVSS 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Published: Jun 17, 2023, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.26% · Oct 27, 2026

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

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	shadow	sid	`1:4.20.3-1`	fixed
Debian	shadow	forky	`1:4.20.3-1`	fixed
Debian	shadow	trixie	`1:4.17.4-2`	fixed
Debian	shadow	bookworm	`1:4.13+dfsg1-1+deb12u2`	fixed
Ubuntu	shadow	pro	`1:4.2-3.2ubuntu4`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu1`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.2`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.3`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.4`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.5`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.5+esm1`	fixed
Ubuntu	shadow	20.04	`1:4.5-1.1ubuntu4`	vulnerable
Ubuntu	shadow	20.04	`1:4.8-1ubuntu1`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu1`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu2`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu3`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu4`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.1`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.2`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.3`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.4`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.5`	fixed
Ubuntu	shadow	22.04	`1:4.8.1-1ubuntu9`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-1ubuntu10`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-2ubuntu1`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-2ubuntu2`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-2ubuntu2.1`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-2ubuntu2.2`	fixed
Opensuse	shadow	tumbleweed	`4.19.2-2.1`	fixed
Suse	shadow	linux enterprise high performance computing 15 sp3-espos	`4.8.1-150300.4.12.1`	fixed
Suse	shadow	linux enterprise high performance computing 15 sp3-ltss	`4.8.1-150300.4.12.1`	fixed
Suse	shadow	linux enterprise server 15 sp3-ltss	`4.8.1-150300.4.12.1`	fixed
Suse	shadow	linux enterprise server for sap applications 15 sp3	`4.8.1-150300.4.12.1`	fixed
Suse	shadow	manager proxy 4.2	`4.8.1-150300.4.12.1`	fixed
Suse	shadow	manager server 4.2	`4.8.1-150300.4.12.1`	fixed
Suse	shadow	linux enterprise micro 5.1	`4.8.1-150300.4.12.1`	fixed
Suse	shadow	linux enterprise micro 5.2	`4.8.1-150300.4.12.1`	fixed
Suse	shadow	enterprise storage 7.1	`4.8.1-150300.4.12.1`	fixed
Suse	shadow	linux enterprise high performance computing 15 sp1-ltss	`4.6-150100.3.11.1`	fixed
Suse	shadow	linux enterprise high performance computing 15 sp2-ltss	`4.6-150100.3.11.1`	fixed
Suse	shadow	linux enterprise server 15 sp1-ltss	`4.6-150100.3.11.1`	fixed
Suse	shadow	linux enterprise server 15 sp2-ltss	`4.6-150100.3.11.1`	fixed
Suse	shadow	linux enterprise server for sap applications 15 sp1	`4.6-150100.3.11.1`	fixed
Suse	shadow	linux enterprise server for sap applications 15 sp2	`4.6-150100.3.11.1`	fixed
Suse	shadow	enterprise storage 7	`4.6-150100.3.11.1`	fixed
Ubuntu	shadow	pro	`1:4.2-3.2ubuntu4`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu1`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.2`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.3`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.4`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.5`	vulnerable
Ubuntu	shadow	pro	`1:4.5-1ubuntu2.5+esm1`	fixed
Ubuntu	shadow	20.04	`1:4.5-1.1ubuntu4`	vulnerable
Ubuntu	shadow	20.04	`1:4.8-1ubuntu1`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu1`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu2`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu3`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu4`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.1`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.2`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.3`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.4`	vulnerable
Ubuntu	shadow	20.04	`1:4.8.1-1ubuntu5.20.04.5`	fixed
Ubuntu	shadow	22.04	`1:4.8.1-1ubuntu9`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-1ubuntu10`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-2ubuntu1`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-2ubuntu2`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-2ubuntu2.1`	vulnerable
Ubuntu	shadow	22.04	`1:4.8.1-2ubuntu2.2`	fixed
Suse	shadow	linux enterprise micro 5.4	`4.8.1-150400.3.3.1`	fixed
Suse	shadow	linux enterprise micro 5.3	`4.8.1-150400.10.12.1`	fixed
Suse	shadow	linux enterprise module for basesystem 15 sp4	`4.8.1-150400.10.12.1`	fixed
Suse	shadow	linux enterprise module for basesystem 15 sp5	`4.8.1-150400.10.12.1`	fixed
Opensuse	shadow	leap 15.4	`4.8.1-150400.10.12.1`	fixed
Opensuse	shadow	leap 15.5	`4.8.1-150400.10.12.1`	fixed
Suse	shadow	linux enterprise server 12 sp5	`4.2.1-36.6.1`	fixed
Suse	shadow	linux enterprise server for sap applications 12 sp5	`4.2.1-36.6.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	shadow	source	sid	`1:4.13+dfsg1-2`	not yet assigned	Not reported	[1051062]
Debian	shadow	source	forky	`1:4.13+dfsg1-2`	not yet assigned	Not reported	[1051062]
Debian	shadow	source	trixie	`1:4.13+dfsg1-2`	not yet assigned	Not reported	[1051062]
Debian	shadow	source	bookworm	`1:4.13+dfsg1-1+deb12u1`	not yet assigned	Not reported	[1051062]
Ubuntu	shadow	deb	pro	`1:4.5-1ubuntu2.5+esm1`	Not reported	USN-6640-1	Not reported
Ubuntu	shadow	deb	20.04	`1:4.8.1-1ubuntu5.20.04.5`	Not reported	USN-6640-1	Not reported
Ubuntu	shadow	deb	22.04	`1:4.8.1-2ubuntu2.2`	Not reported	USN-6640-1	Not reported
Opensuse	shadow	rpm	tumbleweed	`4.19.2-2.1`	Not reported	OPENSUSE-SU-2026:10081-1	Not reported
Suse	shadow	rpm	linux enterprise high performance computing 15 sp3-espos	`4.8.1-150300.4.12.1`	Not reported	SUSE-SU-2023:4027-1	Not reported
Suse	shadow	rpm	linux enterprise high performance computing 15 sp3-ltss	`4.8.1-150300.4.12.1`	Not reported	SUSE-SU-2023:4027-1	Not reported
Suse	shadow	rpm	linux enterprise server 15 sp3-ltss	`4.8.1-150300.4.12.1`	Not reported	SUSE-SU-2023:4027-1	Not reported
Suse	shadow	rpm	linux enterprise server for sap applications 15 sp3	`4.8.1-150300.4.12.1`	Not reported	SUSE-SU-2023:4027-1	Not reported
Suse	shadow	rpm	manager proxy 4.2	`4.8.1-150300.4.12.1`	Not reported	SUSE-SU-2023:4027-1	Not reported
Suse	shadow	rpm	manager server 4.2	`4.8.1-150300.4.12.1`	Not reported	SUSE-SU-2023:4027-1	Not reported
Suse	shadow	rpm	linux enterprise micro 5.1	`4.8.1-150300.4.12.1`	Not reported	SUSE-SU-2023:4027-1	Not reported
Suse	shadow	rpm	linux enterprise micro 5.2	`4.8.1-150300.4.12.1`	Not reported	SUSE-SU-2023:4027-1	Not reported
Suse	shadow	rpm	enterprise storage 7.1	`4.8.1-150300.4.12.1`	Not reported	SUSE-SU-2023:4027-1	Not reported
Suse	shadow	rpm	linux enterprise high performance computing 15 sp1-ltss	`4.6-150100.3.11.1`	Not reported	SUSE-SU-2023:4025-1	Not reported
Suse	shadow	rpm	linux enterprise high performance computing 15 sp2-ltss	`4.6-150100.3.11.1`	Not reported	SUSE-SU-2023:4025-1	Not reported
Suse	shadow	rpm	linux enterprise server 15 sp1-ltss	`4.6-150100.3.11.1`	Not reported	SUSE-SU-2023:4025-1	Not reported
Suse	shadow	rpm	linux enterprise server 15 sp2-ltss	`4.6-150100.3.11.1`	Not reported	SUSE-SU-2023:4025-1	Not reported
Suse	shadow	rpm	linux enterprise server for sap applications 15 sp1	`4.6-150100.3.11.1`	Not reported	SUSE-SU-2023:4025-1	Not reported
Suse	shadow	rpm	linux enterprise server for sap applications 15 sp2	`4.6-150100.3.11.1`	Not reported	SUSE-SU-2023:4025-1	Not reported
Suse	shadow	rpm	enterprise storage 7	`4.6-150100.3.11.1`	Not reported	SUSE-SU-2023:4025-1	Not reported
Ubuntu	shadow	deb	pro	`1:4.5-1ubuntu2.5+esm1`	Not reported	UBUNTU-CVE-2023-4641	Not reported
Ubuntu	shadow	deb	20.04	`1:4.8.1-1ubuntu5.20.04.5`	Not reported	UBUNTU-CVE-2023-4641	Not reported
Ubuntu	shadow	deb	22.04	`1:4.8.1-2ubuntu2.2`	Not reported	UBUNTU-CVE-2023-4641	Not reported
Suse	shadow	rpm	linux enterprise micro 5.4	`4.8.1-150400.3.3.1`	Not reported	SUSE-SU-2023:3591-1	Not reported
Suse	shadow	rpm	linux enterprise micro 5.3	`4.8.1-150400.10.12.1`	Not reported	SUSE-SU-2023:4024-1	Not reported
Suse	shadow	rpm	linux enterprise module for basesystem 15 sp4	`4.8.1-150400.10.12.1`	Not reported	SUSE-SU-2023:4024-1	Not reported
Suse	shadow	rpm	linux enterprise module for basesystem 15 sp5	`4.8.1-150400.10.12.1`	Not reported	SUSE-SU-2023:4024-1	Not reported
Opensuse	shadow	rpm	leap 15.4	`4.8.1-150400.10.12.1`	Not reported	SUSE-SU-2023:4024-1	Not reported
Opensuse	shadow	rpm	leap 15.5	`4.8.1-150400.10.12.1`	Not reported	SUSE-SU-2023:4024-1	Not reported
Suse	shadow	rpm	linux enterprise server 12 sp5	`4.2.1-36.6.1`	Not reported	SUSE-SU-2023:4023-1	Not reported
Suse	shadow	rpm	linux enterprise server for sap applications 12 sp5	`4.2.1-36.6.1`	Not reported	SUSE-SU-2023:4023-1	Not reported

[Debian bug #1051062]

OpenFactory catalog packages

[openSUSE Tumbleweed]

[libsubid6]Unknown
Source package: [shadow]
Details (1)
- 4.20.2-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 4.19.2-2.1
  Version impact unknown
  dsa · shadow · opensuse · tumbleweed
[libsubid-devel]Unknown
Source package: [shadow]
Details (1)
- 4.20.2-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 4.19.2-2.1
  Version impact unknown
  dsa · shadow · opensuse · tumbleweed
[login_defs]Unknown
Source package: [shadow]
Details (1)
- 4.20.2-2.1 · noarch · tumbleweed
  Unknown · Fixed: 4.19.2-2.1
  Version impact unknown
  dsa · shadow · opensuse · tumbleweed
[shadow-pw-mgmt]Unknown
Source package: [shadow]
Details (1)
- 4.20.2-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 4.19.2-2.1
  Version impact unknown
  dsa · shadow · opensuse · tumbleweed
[shadow]Fixed
Source package: [shadow]
Details (1)
- 4.20.2-2.1 · x86_64 · tumbleweed
  Fixed · Fixed: 4.19.2-2.1
  dsa · shadow · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[libsubid4]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
[libsubid-dev]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
[login]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
[passwd]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
[uidmap]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.13+dfsg1-1+deb12u1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12

[Debian 13 (Trixie)]

[libsubid5]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · amd64 · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13
- 1:4.17.4-2 · arm64 · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13
[libsubid-dev]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · amd64 · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13
- 1:4.17.4-2 · arm64 · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13
[login.defs]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · all · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13
- 1:4.17.4-2 · all · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13
[passwd]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · amd64 · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13
- 1:4.17.4-2 · arm64 · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13
[uidmap]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · amd64 · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13
- 1:4.17.4-2 · arm64 · trixie
  Fixed · Fixed: 1:4.13+dfsg1-2
  dsa · shadow · debian · 13

Observed: Oct 28, 2026, 5:44:01 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]