ubuntu-cve-2021-3798
Vulnerability from osv_ubuntu
Published
2022-08-23 16:15
Modified
2026-05-20 14:52
Summary
Details
A flaw was found in openCryptoki. The openCryptoki Soft token does not check if an EC key is valid when an EC key is created via C_CreateObject, nor when C_DeriveKey is used with ECDH public data. This may allow a malicious user to extract the private key by performing an invalid curve attack.
Severity
5.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopencryptoki0",
"binary_version": "3.4.1+dfsg-1ubuntu4.1"
},
{
"binary_name": "opencryptoki",
"binary_version": "3.4.1+dfsg-1ubuntu4.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "opencryptoki",
"purl": "pkg:deb/ubuntu/opencryptoki@3.4.1+dfsg-1ubuntu4.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.3.1+dfsg-3ubuntu5",
"3.4.1+dfsg-1ubuntu1",
"3.4.1+dfsg-1ubuntu2",
"3.4.1+dfsg-1ubuntu3",
"3.4.1+dfsg-1ubuntu4",
"3.4.1+dfsg-1ubuntu4.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopencryptoki0",
"binary_version": "3.9.0+dfsg-0ubuntu1.4"
},
{
"binary_name": "opencryptoki",
"binary_version": "3.9.0+dfsg-0ubuntu1.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "opencryptoki",
"purl": "pkg:deb/ubuntu/opencryptoki@3.9.0+dfsg-0ubuntu1.4?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.7.0+dfsg-4",
"3.8.1+dfsg-2",
"3.8.1+dfsg-3",
"3.8.2+dfsg-0ubuntu1",
"3.9.0+dfsg-0ubuntu1",
"3.9.0+dfsg-0ubuntu1.1",
"3.9.0+dfsg-0ubuntu1.2",
"3.9.0+dfsg-0ubuntu1.3",
"3.9.0+dfsg-0ubuntu1.4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopencryptoki0",
"binary_version": "3.13.0+dfsg-0ubuntu5.2"
},
{
"binary_name": "opencryptoki",
"binary_version": "3.13.0+dfsg-0ubuntu5.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "opencryptoki",
"purl": "pkg:deb/ubuntu/opencryptoki@3.13.0+dfsg-0ubuntu5.2?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.11.1+dfsg-0ubuntu2",
"3.11.1+dfsg-0ubuntu3",
"3.12.1+dfsg-0ubuntu1",
"3.13.0+dfsg-0ubuntu4",
"3.13.0+dfsg-0ubuntu5",
"3.13.0+dfsg-0ubuntu5.1",
"3.13.0+dfsg-0ubuntu5.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopencryptoki0",
"binary_version": "3.17.0+dfsg+20220202.b40982e-0ubuntu1.2"
},
{
"binary_name": "opencryptoki",
"binary_version": "3.17.0+dfsg+20220202.b40982e-0ubuntu1.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "opencryptoki",
"purl": "pkg:deb/ubuntu/opencryptoki@3.17.0+dfsg+20220202.b40982e-0ubuntu1.2?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.16.0+dfsg-0ubuntu1",
"3.16.0+dfsg-0ubuntu2",
"3.16.0+dfsg-0ubuntu3",
"3.17.0+dfsg+20220202.b40982e-0ubuntu1",
"3.17.0+dfsg+20220202.b40982e-0ubuntu1.1",
"3.17.0+dfsg+20220202.b40982e-0ubuntu1.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopencryptoki0",
"binary_version": "3.23.0+dfsg-0ubuntu3"
},
{
"binary_name": "opencryptoki",
"binary_version": "3.23.0+dfsg-0ubuntu3"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "opencryptoki",
"purl": "pkg:deb/ubuntu/opencryptoki@3.23.0+dfsg-0ubuntu3?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.21.0+dfsg-0ubuntu1",
"3.21.0+dfsg-0ubuntu2",
"3.22.0+dfsg-0ubuntu1",
"3.23.0+dfsg-0ubuntu1",
"3.23.0+dfsg-0ubuntu2",
"3.23.0+dfsg-0ubuntu3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopencryptoki0",
"binary_version": "3.25.0+dfsg-0ubuntu1"
},
{
"binary_name": "opencryptoki",
"binary_version": "3.25.0+dfsg-0ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "opencryptoki",
"purl": "pkg:deb/ubuntu/opencryptoki@3.25.0+dfsg-0ubuntu1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.24.0+git20250128.0462717+dfsg-0ubuntu1",
"3.25.0+dfsg-0ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopencryptoki0",
"binary_version": "3.26.0+dfsg-0ubuntu1"
},
{
"binary_name": "opencryptoki",
"binary_version": "3.26.0+dfsg-0ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "opencryptoki",
"purl": "pkg:deb/ubuntu/opencryptoki@3.26.0+dfsg-0ubuntu1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.25.0+dfsg-0ubuntu1",
"3.26.0+dfsg-0ubuntu1"
]
}
],
"aliases": [],
"details": "A flaw was found in openCryptoki. The openCryptoki Soft token does not check if an EC key is valid when an EC key is created via C_CreateObject, nor when C_DeriveKey is used with ECDH public data. This may allow a malicious user to extract the private key by performing an invalid curve attack.",
"id": "UBUNTU-CVE-2021-3798",
"modified": "2026-05-20T14:52:57Z",
"published": "2022-08-23T16:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3798"
},
{
"type": "REPORT",
"url": "https://bugs.launchpad.net/ubuntu/+source/opencryptoki/+bug/1928780"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3798"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-3798"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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