High
rnp — security advisory
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
- Products
- rnp
- Affected versions
- 0.14.0-6, 0.15.2-6build1, 0.17.0-3, 0.17.1-1, 0.18.0-4, 0.18.1-1, 0.18.1-1.1, 0.18.1-1.1build1, 0.18.1-1build1
- Fixed versions
- Not specified
- CVEs
- CVE-2021-33589
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:59 UTC · Revision 1
Source evidence
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
osv:UBUNTU-CVE-2021-33589
rnp
Fixed versions: Not specified
rnp
Fixed versions: Not specified
rnp
Fixed versions: Not specified
rnp
Fixed versions: Not specified
rnp
Fixed versions: Not specified
Complete source record
{
"id": "ad3cf6e30f9cab2032348e551383b24c555ef11422bf55d8a74f1d47a7af43d5",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-33589",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2021-33589",
"summary": "Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.",
"evidence": "osv:UBUNTU-CVE-2021-33589",
"products": [
{
"name": {
"value": "rnp",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.14.0-6",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.2-6build1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "rnp",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.17.0-3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "rnp",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.17.1-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "rnp",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.18.1-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "0.18.1-1.1",
"evidence": "/affected/3/versions"
},
{
"value": "0.18.1-1.1build1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "rnp",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.17.1-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.18.0-4",
"evidence": "/affected/4/versions"
},
{
"value": "0.18.1-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.18.1-1build1",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2021-33589",
"aliases": [
"UBUNTU-CVE-2021-33589"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rnp",
"purl": "pkg:deb/ubuntu/rnp?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.14.0-6",
"0.15.2-6build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "librnp0",
"binary_version": "0.15.2-6build1"
},
{
"binary_name": "rnp",
"binary_version": "0.15.2-6build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rnp",
"purl": "pkg:deb/ubuntu/rnp?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"0.17.0-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "librnp0",
"binary_version": "0.17.0-3"
},
{
"binary_name": "rnp",
"binary_version": "0.17.0-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rnp",
"purl": "pkg:deb/ubuntu/rnp?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"0.17.1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "librnp0",
"binary_version": "0.17.1-1"
},
{
"binary_name": "rnp",
"binary_version": "0.17.1-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rnp",
"purl": "pkg:deb/ubuntu/rnp?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"0.18.1-1build1",
"0.18.1-1.1",
"0.18.1-1.1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "librnp0",
"binary_version": "0.18.1-1.1build1"
},
{
"binary_name": "rnp",
"binary_version": "0.18.1-1.1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rnp",
"purl": "pkg:deb/ubuntu/rnp?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"0.17.1-1",
"0.18.0-4",
"0.18.1-1",
"0.18.1-1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "librnp0",
"binary_version": "0.18.1-1build1"
},
{
"binary_name": "rnp",
"binary_version": "0.18.1-1build1"
}
]
}
}
],
"modified": "2026-10-17T12:56:19.680424928Z",
"provider": "osv",
"upstream": [
"CVE-2021-33589"
],
"references": [
"https://ubuntu.com/security/CVE-2021-33589",
"https://www.ribose.com/feedback/security",
"https://open.ribose.com/advisories/ra-2021-05-30/#CVE-2021-33589",
"https://www.cve.org/CVERecord?id=CVE-2021-33589"
]
},
"related_cves": [
{
"value": "CVE-2021-33589",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 355279,
"published_at": "2023-04-21T12:15:00+00:00"
}