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
2026-04-27T18:24:52Z
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
0 Unknown 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 
{
    "cves":  [
        {
            "id":  "CVE-2025-62291",
            "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"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:22.04:LTS"
}
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
0 Unknown 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 
{
    "cves":  [
        {
            "id":  "CVE-2025-62291",
            "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"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:24.04:LTS"
}
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
0 Unknown 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 
{
    "cves":  [
        {
            "id":  "CVE-2025-62291",
            "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"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:25.10"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7841-1.json"