USN-7841-1

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Source
https://ubuntu.com/security/notices/USN-7841-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7841-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7841-1
Upstream
Related
Published
2025-10-27T15:05:57Z
Modified
2026-02-10T04:50:20Z
Summary
strongswan vulnerability
Details

Xu Biang discovered that the strongSwan client incorrectly handled EAP-MSCHAPv2 failure requests. If a user or automated system were tricked into connecting to a malicious server, a remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code.

References

Affected packages

Ubuntu:22.04:LTS / strongswan

Package

Name
strongswan
Purl
pkg:deb/ubuntu/strongswan@5.9.5-2ubuntu2.4?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.9.5-2ubuntu2.4

Affected versions

5.*
5.9.1-1ubuntu3
5.9.1-1ubuntu3.1
5.9.4-1ubuntu1
5.9.4-1ubuntu2
5.9.4-1ubuntu3
5.9.4-1ubuntu4
5.9.5-2ubuntu1
5.9.5-2ubuntu2
5.9.5-2ubuntu2.1
5.9.5-2ubuntu2.2
5.9.5-2ubuntu2.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "charon-cmd",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "charon-systemd",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "libcharon-extauth-plugins",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "libcharon-extra-plugins",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "libstrongswan",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "libstrongswan-extra-plugins",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "libstrongswan-standard-plugins",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "strongswan",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "strongswan-charon",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "strongswan-libcharon",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "strongswan-nm",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "strongswan-pki",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "strongswan-scepclient",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "strongswan-starter",
            "binary_version": "5.9.5-2ubuntu2.4"
        },
        {
            "binary_name": "strongswan-swanctl",
            "binary_version": "5.9.5-2ubuntu2.4"
        }
    ]
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2025-62291"
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7841-1.json"

Ubuntu:24.04:LTS / strongswan

Package

Name
strongswan
Purl
pkg:deb/ubuntu/strongswan@5.9.13-2ubuntu4.24.04.1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.9.13-2ubuntu4.24.04.1

Affected versions

5.*
5.9.11-1ubuntu1
5.9.11-1ubuntu2
5.9.12-1ubuntu1
5.9.13-2ubuntu1
5.9.13-2ubuntu3
5.9.13-2ubuntu4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "charon-cmd",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "charon-systemd",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "libcharon-extauth-plugins",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "libcharon-extra-plugins",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "libstrongswan",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "libstrongswan-extra-plugins",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "libstrongswan-standard-plugins",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "strongswan",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "strongswan-charon",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "strongswan-libcharon",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "strongswan-nm",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "strongswan-pki",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "strongswan-starter",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        },
        {
            "binary_name": "strongswan-swanctl",
            "binary_version": "5.9.13-2ubuntu4.24.04.1"
        }
    ]
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2025-62291"
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7841-1.json"

Ubuntu:25.10 / strongswan

Package

Name
strongswan
Purl
pkg:deb/ubuntu/strongswan@6.0.1-6ubuntu4.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.0.1-6ubuntu4.1

Affected versions

5.*
5.9.13-2ubuntu4
5.9.13-2ubuntu5
6.*
6.0.1-6ubuntu2
6.0.1-6ubuntu4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "charon-cmd",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "charon-systemd",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "libcharon-extauth-plugins",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "libcharon-extra-plugins",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "libstrongswan",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "libstrongswan-extra-plugins",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "libstrongswan-standard-plugins",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "strongswan",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "strongswan-charon",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "strongswan-libcharon",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "strongswan-nm",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "strongswan-pki",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "strongswan-starter",
            "binary_version": "6.0.1-6ubuntu4.1"
        },
        {
            "binary_name": "strongswan-swanctl",
            "binary_version": "6.0.1-6ubuntu4.1"
        }
    ]
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2025-62291"
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7841-1.json"