High
uptimed — security advisory
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
- Products
- uptimed
- Affected versions
- 1:0.3.17-4, 1:0.4.0+git20150923.6b22106-1.1, 1:0.4.0+git20150923.6b22106-2, 1:0.4.1-1, 1:0.4.2-1, 1:0.4.3-1, 1:0.4.5-1, 1:0.4.6-1, 1:0.4.6-2, 1:0.4.6-3, 1:0.4.6-3.1, 1:0.4.6-3.1build1
- Fixed versions
- Not specified
- CVEs
- CVE-2020-36657
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:52 UTC · Revision 1
Source evidence
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
osv:UBUNTU-CVE-2020-36657
uptimed
Fixed versions: Not specified
uptimed
Fixed versions: Not specified
uptimed
Fixed versions: Not specified
uptimed
Fixed versions: Not specified
uptimed
Fixed versions: Not specified
uptimed
Fixed versions: Not specified
uptimed
Fixed versions: Not specified
uptimed
Fixed versions: Not specified
Complete source record
{
"id": "f2570e0453f0e12994b84d751b179ab37edd457dbee106672d11467a3d6d6ce8",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-36657",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-36657",
"summary": "uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.",
"evidence": "osv:UBUNTU-CVE-2020-36657",
"products": [
{
"name": {
"value": "uptimed",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:0.3.17-4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "uptimed",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:0.4.0+git20150923.6b22106-1.1",
"evidence": "/affected/1/versions"
},
{
"value": "1:0.4.0+git20150923.6b22106-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "uptimed",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:0.4.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1:0.4.2-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "uptimed",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:0.4.3-1",
"evidence": "/affected/3/versions"
},
{
"value": "1:0.4.5-1",
"evidence": "/affected/3/versions"
},
{
"value": "1:0.4.6-1",
"evidence": "/affected/3/versions"
},
{
"value": "1:0.4.6-2",
"evidence": "/affected/3/versions"
},
{
"value": "1:0.4.6-3",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "uptimed",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:0.4.6-3",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "uptimed",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:0.4.6-3.1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "uptimed",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:0.4.6-3.1build1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "uptimed",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:0.4.6-3.1",
"evidence": "/affected/7/versions"
},
{
"value": "1:0.4.6-3.1build1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2020-36657",
"aliases": [
"UBUNTU-CVE-2020-36657"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "uptimed",
"purl": "pkg:deb/ubuntu/uptimed?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"1:0.3.17-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36657.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libuptimed0",
"binary_version": "1:0.3.17-4"
},
{
"binary_name": "uprecords-cgi",
"binary_version": "1:0.3.17-4"
},
{
"binary_name": "uptimed",
"binary_version": "1:0.3.17-4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "uptimed",
"purl": "pkg:deb/ubuntu/uptimed?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1:0.4.0+git20150923.6b22106-1.1",
"1:0.4.0+git20150923.6b22106-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36657.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "uptimed",
"binary_version": "1:0.4.0+git20150923.6b22106-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "uptimed",
"purl": "pkg:deb/ubuntu/uptimed?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"1:0.4.1-1",
"1:0.4.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36657.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "uptimed",
"binary_version": "1:0.4.2-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "uptimed",
"purl": "pkg:deb/ubuntu/uptimed?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1:0.4.3-1",
"1:0.4.5-1",
"1:0.4.6-1",
"1:0.4.6-2",
"1:0.4.6-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36657.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "uptimed",
"binary_version": "1:0.4.6-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "uptimed",
"purl": "pkg:deb/ubuntu/uptimed?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1:0.4.6-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36657.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "uptimed",
"binary_version": "1:0.4.6-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "uptimed",
"purl": "pkg:deb/ubuntu/uptimed?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"1:0.4.6-3.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36657.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "uptimed",
"binary_version": "1:0.4.6-3.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "uptimed",
"purl": "pkg:deb/ubuntu/uptimed?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"1:0.4.6-3.1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36657.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "uptimed",
"binary_version": "1:0.4.6-3.1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "uptimed",
"purl": "pkg:deb/ubuntu/uptimed?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1:0.4.6-3.1",
"1:0.4.6-3.1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36657.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "uptimed",
"binary_version": "1:0.4.6-3.1build1"
}
]
}
}
],
"modified": "2026-10-17T12:56:14.982802715Z",
"provider": "osv",
"upstream": [
"CVE-2020-36657"
],
"references": [
"https://ubuntu.com/security/CVE-2020-36657",
"https://bugs.gentoo.org/630810",
"https://www.cve.org/CVERecord?id=CVE-2020-36657"
]
},
"related_cves": [
{
"value": "CVE-2020-36657",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 355028,
"published_at": "2023-01-26T21:15:00+00:00"
}