medium
5.5
CWE
303 287
Advisory Published
CVE Published
CVE Published
Updated

CVE-2023-4641: Shadow-utils: possible password leak during passwd(1) change

First published: Mon Jun 19 2023(Updated: )

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.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/shadow<=1:4.5-1.1<=1:4.8.1-1<=1:4.13+dfsg1-1
1:4.13+dfsg1-4
ubuntu/shadow<1:4.5-1ubuntu2.5+
1:4.5-1ubuntu2.5+
ubuntu/shadow<1:4.8.1-1ubuntu5.20.04.5
1:4.8.1-1ubuntu5.20.04.5
ubuntu/shadow<1:4.8.1-2ubuntu2.2
1:4.8.1-2ubuntu2.2
ubuntu/shadow<1:4.13+dfsg1-1ubuntu1.1
1:4.13+dfsg1-1ubuntu1.1
ubuntu/shadow<1:4.1.5.1-1ubuntu9.5+
1:4.1.5.1-1ubuntu9.5+
ubuntu/shadow<1:4.13+dfsg1-2<4.14.0
1:4.13+dfsg1-2
4.14.0
ubuntu/shadow<1:4.2-3.1ubuntu5.5+
1:4.2-3.1ubuntu5.5+
redhat/shadow-utils<4.14.0
4.14.0
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager<=ISVG 10.0.2
Debian Shadow<4.14.0
Red Hat CodeReady Linux Builder=8.0
Red Hat CodeReady Linux Builder=9.0
Red Hat CodeReady Linux Builder for ARM 64=8.0_aarch64
Red Hat CodeReady Linux Builder for ARM 64=9.0_aarch64
Red Hat CodeReady Linux Builder for IBM z Systems=8.0_s390x
Red Hat CodeReady Linux Builder for IBM z Systems=9.0_s390x
Red Hat CodeReady Linux Builder for Power, little endian=8.0_ppc64le
Red Hat CodeReady Linux Builder for Power, little endian=9.0_ppc64le
Red Hat Enterprise Linux=8.0
Red Hat Enterprise Linux=9.0
Red Hat Enterprise Linux=8.0
Red Hat Enterprise Linux=9.0
Red Hat Enterprise Linux for IBM Z Systems=8.0_s390x
Red Hat Enterprise Linux for IBM Z Systems=9.0_s390x
Red Hat Enterprise Linux for Power, little endian=8.0_ppc64le
Red Hat Enterprise Linux for Power, little endian=9.0_ppc64le

Remedy

https://github.com/shadow-maint/shadow/commit/65c88a43a23c2391dcc90c0abda3e839e9c57904

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

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

    CVE-2023-4641 is classified as a medium severity vulnerability.

  • How do I fix CVE-2023-4641?

    To fix CVE-2023-4641, update shadow-utils to version 1:4.13+dfsg1-4 or higher.

  • What impact does CVE-2023-4641 have on affected systems?

    CVE-2023-4641 can potentially allow attackers to retrieve sensitive passwords from memory.

  • Which versions of shadow-utils are affected by CVE-2023-4641?

    Versions of shadow-utils up to 4.14.0 are affected by CVE-2023-4641.

  • What operating systems are impacted by CVE-2023-4641?

    CVE-2023-4641 affects multiple versions of Debian and Ubuntu operating systems.

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