USN-5111-1
- 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.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
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.6.2-1ubuntu2.7
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
{
"availability": "No subscription required",
"binaries": [
{
"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",
"binary_version": "5.6.2-1ubuntu2.7"
}
]
}
Database specific
{
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"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-2021-41990"
},
{
"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"
}
]
}
}
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
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.8.2-1ubuntu3.3
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
{
"availability": "No subscription required",
"binaries": [
{
"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",
"binary_version": "5.8.2-1ubuntu3.3"
}
]
}
Database specific
{
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": [
{
"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-2021-41990"
},
{
"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"
}
]
}
}