ubuntu-cve-2023-51384
Vulnerability from osv_ubuntu
Published
2023-12-20 00:00
Modified
2026-05-29 17:47
Summary
Details
In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied. When destination constraints are specified during addition of PKCS#11-hosted private keys, these constraints are only applied to the first key, even if a PKCS#11 token returns multiple keys.
Severity
5.5 (Medium)
5.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-10"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-10?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-8",
"1:7.5p1-9",
"1:7.5p1-9build1",
"1:7.5p1-10"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-11build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-11build1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-11build1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:8.9p1-3ubuntu0.6"
},
{
"binary_name": "openssh-server",
"binary_version": "1:8.9p1-3ubuntu0.6"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:8.9p1-3ubuntu0.6"
},
{
"binary_name": "openssh-tests",
"binary_version": "1:8.9p1-3ubuntu0.6"
},
{
"binary_name": "ssh",
"binary_version": "1:8.9p1-3ubuntu0.6"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:8.9p1-3ubuntu0.6"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:8.9p1-3ubuntu0.6?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:8.9p1-3ubuntu0.6"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:8.4p1-6ubuntu2",
"1:8.7p1-2",
"1:8.7p1-2build1",
"1:8.7p1-4",
"1:8.8p1-1",
"1:8.9p1-3",
"1:8.9p1-3ubuntu0.1",
"1:8.9p1-3ubuntu0.3",
"1:8.9p1-3ubuntu0.4",
"1:8.9p1-3ubuntu0.5"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-13"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-13?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-12",
"1:7.5p1-12build1",
"1:7.5p1-13"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:9.6p1-3ubuntu1"
},
{
"binary_name": "openssh-server",
"binary_version": "1:9.6p1-3ubuntu1"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:9.6p1-3ubuntu1"
},
{
"binary_name": "openssh-tests",
"binary_version": "1:9.6p1-3ubuntu1"
},
{
"binary_name": "ssh",
"binary_version": "1:9.6p1-3ubuntu1"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:9.6p1-3ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:9.6p1-3ubuntu1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.6p1-3ubuntu1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:9.3p1-1ubuntu3",
"1:9.4p1-1ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-16"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-16?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-14",
"1:7.5p1-15",
"1:7.5p1-15build1",
"1:7.5p1-16"
]
}
],
"aliases": [],
"details": "In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied. When destination constraints are specified during addition of PKCS#11-hosted private keys, these constraints are only applied to the first key, even if a PKCS#11 token returns multiple keys.",
"id": "UBUNTU-CVE-2023-51384",
"modified": "2026-05-29T17:47:16Z",
"published": "2023-12-20T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-51384"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2023/12/18/2"
},
{
"type": "REPORT",
"url": "https://www.openssh.com/txt/release-9.6"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6565-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-51384"
}
],
"related": [
"USN-6565-1"
],
"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": "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-2023-51384"
]
}
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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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