USN-5111-1

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Source
https://ubuntu.com/security/notices/USN-5111-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5111-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-5111-1
Upstream
Related
Published
2021-10-19T10:54:55.685839Z
Modified
2025-10-13T04:35:38Z
Summary
strongswan vulnerabilities
Details

It was discovered that strongSwan incorrectly handled certain RSASSA-PSS signatures. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service. (CVE-2021-41990)

It was discovered that strongSwan incorrectly handled replacing certificates in the cache. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-41991)

References

Affected packages

Ubuntu:18.04:LTS / strongswan

Package

Name
strongswan
Purl
pkg:deb/ubuntu/strongswan@5.6.2-1ubuntu2.7?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.6.2-1ubuntu2.7

Affected versions

5.*

5.5.1-4ubuntu2
5.5.1-4ubuntu3
5.6.1-2ubuntu1
5.6.1-2ubuntu2
5.6.1-2ubuntu3
5.6.1-2ubuntu4
5.6.2-1ubuntu2
5.6.2-1ubuntu2.2
5.6.2-1ubuntu2.3
5.6.2-1ubuntu2.4
5.6.2-1ubuntu2.5
5.6.2-1ubuntu2.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "charon-cmd"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "charon-systemd"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "libcharon-extra-plugins"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "libcharon-standard-plugins"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "libstrongswan"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "libstrongswan-extra-plugins"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "libstrongswan-standard-plugins"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-charon"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-libcharon"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-nm"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-pki"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-scepclient"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-starter"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-swanctl"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-tnc-base"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-tnc-client"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-tnc-ifmap"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-tnc-pdp"
        },
        {
            "binary_version": "5.6.2-1ubuntu2.7",
            "binary_name": "strongswan-tnc-server"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5111-1.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2021-41990",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-41991",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}

Ubuntu:20.04:LTS / strongswan

Package

Name
strongswan
Purl
pkg:deb/ubuntu/strongswan@5.8.2-1ubuntu3.3?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.8.2-1ubuntu3.3

Affected versions

5.*

5.7.2-1ubuntu3
5.8.1-1ubuntu1
5.8.2-1ubuntu1
5.8.2-1ubuntu2
5.8.2-1ubuntu3
5.8.2-1ubuntu3.1
5.8.2-1ubuntu3.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "charon-cmd"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "charon-systemd"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "libcharon-extauth-plugins"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "libcharon-extra-plugins"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "libcharon-standard-plugins"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "libstrongswan"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "libstrongswan-extra-plugins"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "libstrongswan-standard-plugins"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-charon"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-libcharon"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-nm"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-pki"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-scepclient"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-starter"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-swanctl"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-tnc-base"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-tnc-client"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-tnc-ifmap"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-tnc-pdp"
        },
        {
            "binary_version": "5.8.2-1ubuntu3.3",
            "binary_name": "strongswan-tnc-server"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5111-1.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2021-41990",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-41991",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}