UBUNTU-CVE-2025-1390

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Source
https://ubuntu.com/security/CVE-2025-1390
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-1390.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-1390
Upstream
Downstream
Related
Published
2025-02-20T00:00:00Z
Modified
2026-06-23T22:00:07Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The PAM module pam_cap.so of libcap configuration supports group names starting with “@”, during actual parsing, configurations not starting with “@” are incorrectly recognized as group names. This may result in nonintended users being granted an inherited capability set, potentially leading to security risks. Attackers can exploit this vulnerability to achieve local privilege escalation on systems where /etc/security/capability.conf is used to configure user inherited privileges by constructing specific usernames.

References

Affected packages

Ubuntu:20.04:LTS
libcap2

Package

Name
libcap2
Purl
pkg:deb/ubuntu/libcap2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:2.32-1ubuntu0.2

Affected versions

1:2.*
1:2.25-2
1:2.27-1
1:2.32-1
1:2.32-1ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libcap2",
            "binary_version": "1:2.32-1ubuntu0.2"
        },
        {
            "binary_name": "libcap2-bin",
            "binary_version": "1:2.32-1ubuntu0.2"
        },
        {
            "binary_name": "libpam-cap",
            "binary_version": "1:2.32-1ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-1390.json"
Ubuntu:22.04:LTS
libcap2

Package

Name
libcap2
Purl
pkg:deb/ubuntu/libcap2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:2.44-1ubuntu0.22.04.2

Affected versions

1:2.*
1:2.44-1build1
1:2.44-1build2
1:2.44-1build3
1:2.44-1ubuntu0.22.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libcap2",
            "binary_version": "1:2.44-1ubuntu0.22.04.2"
        },
        {
            "binary_name": "libcap2-bin",
            "binary_version": "1:2.44-1ubuntu0.22.04.2"
        },
        {
            "binary_name": "libpam-cap",
            "binary_version": "1:2.44-1ubuntu0.22.04.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-1390.json"
Ubuntu:24.04:LTS
libcap2

Package

Name
libcap2
Purl
pkg:deb/ubuntu/libcap2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:2.66-5ubuntu2.2

Affected versions

1:2.*
1:2.66-4ubuntu1
1:2.66-5ubuntu1
1:2.66-5ubuntu2
1:2.66-5ubuntu2.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libcap2",
            "binary_version": "1:2.66-5ubuntu2.2"
        },
        {
            "binary_name": "libcap2-bin",
            "binary_version": "1:2.66-5ubuntu2.2"
        },
        {
            "binary_name": "libpam-cap",
            "binary_version": "1:2.66-5ubuntu2.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-1390.json"
Ubuntu:Pro:14.04:LTS
libcap2

Package

Name
libcap2
Purl
pkg:deb/ubuntu/libcap2?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.22-1.2ubuntu2
1:2.24-0ubuntu1
1:2.24-0ubuntu2
1:2.24-0ubuntu2+esm1
1:2.24-0ubuntu2+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcap2",
            "binary_version": "1:2.24-0ubuntu2+esm2"
        },
        {
            "binary_name": "libcap2-bin",
            "binary_version": "1:2.24-0ubuntu2+esm2"
        },
        {
            "binary_name": "libpam-cap",
            "binary_version": "1:2.24-0ubuntu2+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-1390.json"
Ubuntu:Pro:16.04:LTS
libcap2

Package

Name
libcap2
Purl
pkg:deb/ubuntu/libcap2?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.24-9
1:2.24-12
1:2.24-12ubuntu0.1~esm1
1:2.24-12ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcap2",
            "binary_version": "1:2.24-12ubuntu0.1~esm2"
        },
        {
            "binary_name": "libcap2-bin",
            "binary_version": "1:2.24-12ubuntu0.1~esm2"
        },
        {
            "binary_name": "libpam-cap",
            "binary_version": "1:2.24-12ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-1390.json"
Ubuntu:Pro:18.04:LTS
libcap2

Package

Name
libcap2
Purl
pkg:deb/ubuntu/libcap2?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.25-1.1
1:2.25-1.2
1:2.25-1.2ubuntu0.1~esm1
1:2.25-1.2ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcap2",
            "binary_version": "1:2.25-1.2ubuntu0.1~esm2"
        },
        {
            "binary_name": "libcap2-bin",
            "binary_version": "1:2.25-1.2ubuntu0.1~esm2"
        },
        {
            "binary_name": "libpam-cap",
            "binary_version": "1:2.25-1.2ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-1390.json"