UBUNTU-CVE-2023-4641

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Source
https://ubuntu.com/security/CVE-2023-4641
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-4641.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-4641
Upstream
Downstream
Related
Published
2023-12-27T16:15:00Z
Modified
2025-07-18T16:54:09Z
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:14.04:LTS / shadow

Package

Name
shadow
Purl
pkg:deb/ubuntu/shadow@1:4.1.5.1-1ubuntu9.5+esm4?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.1.5.1-1ubuntu9.5+esm4

Affected versions

1:4.*

1:4.1.5.1-1ubuntu6
1:4.1.5.1-1ubuntu7
1:4.1.5.1-1ubuntu8
1:4.1.5.1-1ubuntu9
1:4.1.5.1-1ubuntu9.1
1:4.1.5.1-1ubuntu9.2
1:4.1.5.1-1ubuntu9.4
1:4.1.5.1-1ubuntu9.5
1:4.1.5.1-1ubuntu9.5+esm1
1:4.1.5.1-1ubuntu9.5+esm2
1:4.1.5.1-1ubuntu9.5+esm3

Ecosystem specific 

{
    "priority_reason": "Unlikely attack scenario",
    "binaries": [
        {
            "binary_name": "login",
            "binary_version": "1:4.1.5.1-1ubuntu9.5+esm4"
        },
        {
            "binary_name": "login-dbgsym",
            "binary_version": "1:4.1.5.1-1ubuntu9.5+esm4"
        },
        {
            "binary_name": "passwd",
            "binary_version": "1:4.1.5.1-1ubuntu9.5+esm4"
        },
        {
            "binary_name": "passwd-dbgsym",
            "binary_version": "1:4.1.5.1-1ubuntu9.5+esm4"
        },
        {
            "binary_name": "uidmap",
            "binary_version": "1:4.1.5.1-1ubuntu9.5+esm4"
        },
        {
            "binary_name": "uidmap-dbgsym",
            "binary_version": "1:4.1.5.1-1ubuntu9.5+esm4"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:16.04:LTS / shadow

Package

Name
shadow
Purl
pkg:deb/ubuntu/shadow@1:4.2-3.1ubuntu5.5+esm4?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.2-3.1ubuntu5.5+esm4

Affected versions

1:4.*

1:4.1.5.1-1.1ubuntu7
1:4.2-3.1ubuntu1
1:4.2-3.1ubuntu2
1:4.2-3.1ubuntu3
1:4.2-3.1ubuntu4
1:4.2-3.1ubuntu5
1:4.2-3.1ubuntu5.2
1:4.2-3.1ubuntu5.3
1:4.2-3.1ubuntu5.4
1:4.2-3.1ubuntu5.5+esm1
1:4.2-3.1ubuntu5.5+esm2
1:4.2-3.1ubuntu5.5+esm3

Ecosystem specific 

{
    "priority_reason": "Unlikely attack scenario",
    "binaries": [
        {
            "binary_name": "login",
            "binary_version": "1:4.2-3.1ubuntu5.5+esm4"
        },
        {
            "binary_name": "login-dbgsym",
            "binary_version": "1:4.2-3.1ubuntu5.5+esm4"
        },
        {
            "binary_name": "passwd",
            "binary_version": "1:4.2-3.1ubuntu5.5+esm4"
        },
        {
            "binary_name": "passwd-dbgsym",
            "binary_version": "1:4.2-3.1ubuntu5.5+esm4"
        },
        {
            "binary_name": "uidmap",
            "binary_version": "1:4.2-3.1ubuntu5.5+esm4"
        },
        {
            "binary_name": "uidmap-dbgsym",
            "binary_version": "1:4.2-3.1ubuntu5.5+esm4"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:18.04:LTS / shadow

Package

Name
shadow
Purl
pkg:deb/ubuntu/shadow@1:4.5-1ubuntu2.5+esm1?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.5-1ubuntu2.5+esm1

Affected versions

1:4.*

1:4.2-3.2ubuntu4
1:4.5-1ubuntu1
1:4.5-1ubuntu2
1:4.5-1ubuntu2.2
1:4.5-1ubuntu2.3
1:4.5-1ubuntu2.4
1:4.5-1ubuntu2.5

Ecosystem specific 

{
    "priority_reason": "Unlikely attack scenario",
    "binaries": [
        {
            "binary_name": "login",
            "binary_version": "1:4.5-1ubuntu2.5+esm1"
        },
        {
            "binary_name": "login-dbgsym",
            "binary_version": "1:4.5-1ubuntu2.5+esm1"
        },
        {
            "binary_name": "passwd",
            "binary_version": "1:4.5-1ubuntu2.5+esm1"
        },
        {
            "binary_name": "passwd-dbgsym",
            "binary_version": "1:4.5-1ubuntu2.5+esm1"
        },
        {
            "binary_name": "uidmap",
            "binary_version": "1:4.5-1ubuntu2.5+esm1"
        },
        {
            "binary_name": "uidmap-dbgsym",
            "binary_version": "1:4.5-1ubuntu2.5+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:20.04:LTS / shadow

Package

Name
shadow
Purl
pkg:deb/ubuntu/shadow@1:4.8.1-1ubuntu5.20.04.5?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.8.1-1ubuntu5.20.04.5

Affected versions

1:4.*

1:4.5-1.1ubuntu4
1:4.8-1ubuntu1
1:4.8.1-1ubuntu1
1:4.8.1-1ubuntu2
1:4.8.1-1ubuntu3
1:4.8.1-1ubuntu4
1:4.8.1-1ubuntu5
1:4.8.1-1ubuntu5.20.04
1:4.8.1-1ubuntu5.20.04.1
1:4.8.1-1ubuntu5.20.04.2
1:4.8.1-1ubuntu5.20.04.3
1:4.8.1-1ubuntu5.20.04.4

Ecosystem specific 

{
    "priority_reason": "Unlikely attack scenario",
    "binaries": [
        {
            "binary_name": "login",
            "binary_version": "1:4.8.1-1ubuntu5.20.04.5"
        },
        {
            "binary_name": "login-dbgsym",
            "binary_version": "1:4.8.1-1ubuntu5.20.04.5"
        },
        {
            "binary_name": "passwd",
            "binary_version": "1:4.8.1-1ubuntu5.20.04.5"
        },
        {
            "binary_name": "passwd-dbgsym",
            "binary_version": "1:4.8.1-1ubuntu5.20.04.5"
        },
        {
            "binary_name": "uidmap",
            "binary_version": "1:4.8.1-1ubuntu5.20.04.5"
        },
        {
            "binary_name": "uidmap-dbgsym",
            "binary_version": "1:4.8.1-1ubuntu5.20.04.5"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS / shadow

Package

Name
shadow
Purl
pkg:deb/ubuntu/shadow@1:4.8.1-2ubuntu2.2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.8.1-2ubuntu2.2

Affected versions

1:4.*

1:4.8.1-1ubuntu9
1:4.8.1-1ubuntu10
1:4.8.1-2ubuntu1
1:4.8.1-2ubuntu2
1:4.8.1-2ubuntu2.1

Ecosystem specific 

{
    "priority_reason": "Unlikely attack scenario",
    "binaries": [
        {
            "binary_name": "login",
            "binary_version": "1:4.8.1-2ubuntu2.2"
        },
        {
            "binary_name": "login-dbgsym",
            "binary_version": "1:4.8.1-2ubuntu2.2"
        },
        {
            "binary_name": "passwd",
            "binary_version": "1:4.8.1-2ubuntu2.2"
        },
        {
            "binary_name": "passwd-dbgsym",
            "binary_version": "1:4.8.1-2ubuntu2.2"
        },
        {
            "binary_name": "uidmap",
            "binary_version": "1:4.8.1-2ubuntu2.2"
        },
        {
            "binary_name": "uidmap-dbgsym",
            "binary_version": "1:4.8.1-2ubuntu2.2"
        }
    ],
    "availability": "No subscription required"
}