Medium
obs-build — security advisory
a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.
- Products
- obs-build
- Affected versions
- 20141024-1, 20141024-1.1, 20170201-3, 20180831-3, 20180831-3ubuntu1, 20190710-1, 20210120-1, 20210120-4, 20210120-4build1
- Fixed versions
- Not specified
- CVEs
- CVE-2020-8021
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:29 UTC · Revision 1
Source evidence
a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.
osv:UBUNTU-CVE-2020-8021
obs-build
Fixed versions: Not specified
obs-build
Fixed versions: Not specified
obs-build
Fixed versions: Not specified
obs-build
Fixed versions: Not specified
obs-build
Fixed versions: Not specified
obs-build
Fixed versions: Not specified
obs-build
Fixed versions: Not specified
obs-build
Fixed versions: Not specified
Complete source record
{
"id": "8b3366d01f73da77ecaded281025fd3886b6c77b3d911a705eedbf9a825baadc",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-8021",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-8021",
"summary": "a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.",
"evidence": "osv:UBUNTU-CVE-2020-8021",
"products": [
{
"name": {
"value": "obs-build",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20141024-1",
"evidence": "/affected/0/versions"
},
{
"value": "20141024-1.1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "obs-build",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20170201-3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "obs-build",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20180831-3",
"evidence": "/affected/2/versions"
},
{
"value": "20180831-3ubuntu1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "obs-build",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20190710-1",
"evidence": "/affected/3/versions"
},
{
"value": "20210120-1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "obs-build",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20210120-4",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "obs-build",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20210120-4",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "obs-build",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20210120-4build1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "obs-build",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20210120-4",
"evidence": "/affected/7/versions"
},
{
"value": "20210120-4build1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2020-8021",
"aliases": [
"UBUNTU-CVE-2020-8021"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "obs-build",
"purl": "pkg:deb/ubuntu/obs-build?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"20141024-1",
"20141024-1.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8021.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "obs-build",
"binary_version": "20141024-1.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "obs-build",
"purl": "pkg:deb/ubuntu/obs-build?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"20170201-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8021.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "obs-build",
"binary_version": "20170201-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "obs-build",
"purl": "pkg:deb/ubuntu/obs-build?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"20180831-3",
"20180831-3ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8021.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "obs-build",
"binary_version": "20180831-3ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "obs-build",
"purl": "pkg:deb/ubuntu/obs-build?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"20190710-1",
"20210120-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8021.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "obs-build",
"binary_version": "20210120-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "obs-build",
"purl": "pkg:deb/ubuntu/obs-build?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"20210120-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8021.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "obs-build",
"binary_version": "20210120-4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "obs-build",
"purl": "pkg:deb/ubuntu/obs-build?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"20210120-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8021.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "obs-build",
"binary_version": "20210120-4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "obs-build",
"purl": "pkg:deb/ubuntu/obs-build?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"20210120-4build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8021.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "obs-build",
"binary_version": "20210120-4build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "obs-build",
"purl": "pkg:deb/ubuntu/obs-build?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"20210120-4",
"20210120-4build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8021.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "obs-build",
"binary_version": "20210120-4build1"
}
]
}
}
],
"modified": "2026-10-17T12:56:57.473230636Z",
"provider": "osv",
"upstream": [
"CVE-2020-8021"
],
"references": [
"https://ubuntu.com/security/CVE-2020-8021",
"https://bugzilla.suse.com/show_bug.cgi?id=1171649",
"https://www.cve.org/CVERecord?id=CVE-2020-8021"
]
},
"related_cves": [
{
"value": "CVE-2020-8021",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 356575,
"published_at": "2020-05-19T15:15:00+00:00"
}