CVE-2023-4641

MEDIUM

4.7

CVSS v3

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.

CWE-303 CWE-287Improper Authentication

How to fix

Remediation Available

shadowDebian

Fixed in:1:4.8.1-1+deb11u1CVE-2023-4641

Fixed in:1:4.13+dfsg1-1+deb12u1CVE-2023-4641

Fixed in:1:4.13+dfsg1-2CVE-2023-4641

shadow-utilsRocky

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utilsRed Hat / RHEL

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-debuginfoRed Hat / RHEL

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-debuginfoRocky

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-debugsourceRocky

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-debugsourceRed Hat / RHEL

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-subidRed Hat / RHEL

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-subidRocky

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-subid-debuginfoRocky

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-subid-debuginfoRed Hat / RHEL

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-subid-develRocky

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.9-8.el9RHSA-2023:6632

shadow-utils-subid-develRed Hat / RHEL

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-19.el8RHSA-2023:7112

Fixed in:2:4.6-17.el8_8.2RHSA-2024:2577

Fixed in:2:4.6-17.el8_6RHSA-2024:0417

Fixed in:2:4.9-8.el9RHSA-2023:6632

libsubid-devUbuntu

Fixed in:1:4.13+dfsg1-1ubuntu1.1USN-6640-1

libsubid4Ubuntu

Fixed in:1:4.13+dfsg1-1ubuntu1.1USN-6640-1

loginUbuntu

Fixed in:1:4.1.5.1-1ubuntu9.5+esm4USN-6640-1

Fixed in:1:4.2-3.1ubuntu5.5+esm4USN-6640-1

Fixed in:1:4.5-1ubuntu2.5+esm1USN-6640-1

Fixed in:1:4.8.1-1ubuntu5.20.04.5USN-6640-1

Fixed in:1:4.8.1-2ubuntu2.2USN-6640-1

Fixed in:1:4.13+dfsg1-1ubuntu1.1USN-6640-1

passwdUbuntu

Fixed in:1:4.1.5.1-1ubuntu9.5+esm4USN-6640-1

Fixed in:1:4.2-3.1ubuntu5.5+esm4USN-6640-1

Fixed in:1:4.5-1ubuntu2.5+esm1USN-6640-1

Fixed in:1:4.8.1-1ubuntu5.20.04.5USN-6640-1

Fixed in:1:4.8.1-2ubuntu2.2USN-6640-1

Fixed in:1:4.13+dfsg1-1ubuntu1.1USN-6640-1

shadowUbuntu

Fixed in:1:4.1.5.1-1ubuntu9.5+esm4USN-6640-1

Fixed in:1:4.2-3.1ubuntu5.5+esm4USN-6640-1

Fixed in:1:4.5-1ubuntu2.5+esm1USN-6640-1

Fixed in:1:4.8.1-1ubuntu5.20.04.5USN-6640-1

Fixed in:1:4.8.1-2ubuntu2.2USN-6640-1

Fixed in:1:4.13+dfsg1-1ubuntu1.1USN-6640-1

uidmapUbuntu

Fixed in:1:4.1.5.1-1ubuntu9.5+esm4USN-6640-1

Fixed in:1:4.2-3.1ubuntu5.5+esm4USN-6640-1

Fixed in:1:4.5-1ubuntu2.5+esm1USN-6640-1

Fixed in:1:4.8.1-1ubuntu5.20.04.5USN-6640-1

Fixed in:1:4.8.1-2ubuntu2.2USN-6640-1

Fixed in:1:4.13+dfsg1-1ubuntu1.1USN-6640-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.26%probability of exploitation in 30 days

17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Third-Party Advisory3

Issue Tracking1

bugzilla.redhat.com

Other references3

Related Vulnerabilities

Other CWE-303 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-7593	Critical	9.8	100%	KEV	-
CVE-2023-29357	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-8863	High	8.8	77%	-	-
CVE-2023-32152	Medium	6.5	29%	-	-
CVE-2023-32148	Medium	6.5	29%	-	-
CVE-2022-20695	Critical	10.0	20%	-	-

Common questions

How do I fix CVE-2023-4641?

Published advisories record a fix for 19 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2023-4641 being actively exploited?

Not that we know of. CVE-2023-4641 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.26% is the estimated probability that it will be exploited in the next 30 days. That is higher than 17% of all scored CVEs.

How severe is CVE-2023-4641?

CVE-2023-4641 has a CVSS v3 base score of 4.7, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-4641 affect?

Published advisories record a fix for shadow (Debian), shadow-utils (Rocky), shadow-utils (Red Hat / RHEL), shadow-utils-debuginfo (Red Hat / RHEL), and 15 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2023-4641

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.