Is CVE-2023-4641 in the CISA KEV catalog?

No. CVE-2023-4641 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-4641?

CVE-2023-4641 has a CVSS v3 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2023-4641?

CVE-2023-4641 has an EPSS score of 0.26% (17th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-4641?

Upgrade shadow on debian 11 to 1:4.8.1-1+deb11u1 or later. Fixes are available for 19 affected products.

CVE & CISA-KEV Catalog

CVE-2023-4641

MEDIUM

4.7

CVSS v3

NVD

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-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_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_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:2:4.6-17.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:2:4.6-17.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-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_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:2:4.6-17.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

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

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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.