ubuntu-cve-2021-28117
Vulnerability from osv_ubuntu
Published
2021-03-20 21:15
Modified
2025-10-24 04:50
Summary
Details
libdiscover/backends/KNSBackend/KNSResource.cpp in KDE Discover before 5.21.3 automatically creates links to potentially dangerous URLs (that are neither https:// nor http://) based on the content of the store.kde.org web site. (5.18.7 is also a fixed version.)
Severity
7.5 (High)
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "muon-discover",
"binary_version": "4:5.6.2-1ubuntu1.1"
},
{
"binary_name": "muon-notifier",
"binary_version": "4:5.6.2-1ubuntu1.1"
},
{
"binary_name": "muon-updater",
"binary_version": "4:5.6.2-1ubuntu1.1"
},
{
"binary_name": "plasma-discover",
"binary_version": "5.6.2-1ubuntu1.1"
},
{
"binary_name": "plasma-discover-common",
"binary_version": "5.6.2-1ubuntu1.1"
},
{
"binary_name": "plasma-discover-private",
"binary_version": "5.6.2-1ubuntu1.1"
},
{
"binary_name": "plasma-discover-updater",
"binary_version": "5.6.2-1ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "plasma-discover",
"purl": "pkg:deb/ubuntu/plasma-discover@5.6.2-1ubuntu1.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.5.4-0ubuntu1",
"5.5.5-0ubuntu1",
"5.5.5-0ubuntu2",
"5.6.2-1ubuntu1",
"5.6.2-1ubuntu1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "muon-discover",
"binary_version": "4:5.12.8-0ubuntu0.1"
},
{
"binary_name": "muon-notifier",
"binary_version": "4:5.12.8-0ubuntu0.1"
},
{
"binary_name": "muon-updater",
"binary_version": "4:5.12.8-0ubuntu0.1"
},
{
"binary_name": "plasma-discover",
"binary_version": "5.12.8-0ubuntu0.1"
},
{
"binary_name": "plasma-discover-common",
"binary_version": "5.12.8-0ubuntu0.1"
},
{
"binary_name": "plasma-discover-flatpak-backend",
"binary_version": "5.12.8-0ubuntu0.1"
},
{
"binary_name": "plasma-discover-snap-backend",
"binary_version": "5.12.8-0ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "plasma-discover",
"purl": "pkg:deb/ubuntu/plasma-discover@5.12.8-0ubuntu0.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.10.5-0ubuntu1",
"5.11.3-0ubuntu1",
"5.11.4-0ubuntu1",
"5.11.5-0ubuntu1",
"5.12.0-0ubuntu1",
"5.12.0-0ubuntu2",
"5.12.1-0ubuntu1",
"5.12.1-0ubuntu2",
"5.12.2-0ubuntu1",
"5.12.2-0ubuntu2",
"5.12.3-0ubuntu1",
"5.12.4-0ubuntu1",
"5.12.5-0ubuntu0.1",
"5.12.5.1-0ubuntu0.1",
"5.12.6-0ubuntu0.1",
"5.12.7-0ubuntu0.1",
"5.12.8-0ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "plasma-discover",
"binary_version": "5.18.7-0ubuntu0.1"
},
{
"binary_name": "plasma-discover-backend-flatpak",
"binary_version": "5.18.7-0ubuntu0.1"
},
{
"binary_name": "plasma-discover-backend-fwupd",
"binary_version": "5.18.7-0ubuntu0.1"
},
{
"binary_name": "plasma-discover-backend-snap",
"binary_version": "5.18.7-0ubuntu0.1"
},
{
"binary_name": "plasma-discover-common",
"binary_version": "5.18.7-0ubuntu0.1"
},
{
"binary_name": "plasma-discover-flatpak-backend",
"binary_version": "5.18.7-0ubuntu0.1"
},
{
"binary_name": "plasma-discover-snap-backend",
"binary_version": "5.18.7-0ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "plasma-discover",
"purl": "pkg:deb/ubuntu/plasma-discover@5.18.7-0ubuntu0.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.16.5-0ubuntu1",
"5.17.2-0ubuntu1",
"5.17.3-0ubuntu1",
"5.17.4-0ubuntu1",
"5.17.5-0ubuntu1",
"5.17.90-0ubuntu1",
"5.17.90-0ubuntu2",
"5.18.0-0ubuntu1",
"5.18.1-0ubuntu1",
"5.18.2-0ubuntu1",
"5.18.2-0ubuntu2",
"5.18.3-0ubuntu1",
"5.18.4.1-0ubuntu1",
"5.18.5-0ubuntu0.1",
"5.18.7-0ubuntu0.1"
]
}
],
"aliases": [],
"details": "libdiscover/backends/KNSBackend/KNSResource.cpp in KDE Discover before 5.21.3 automatically creates links to potentially dangerous URLs (that are neither https:// nor http://) based on the content of the store.kde.org web site. (5.18.7 is also a fixed version.)",
"id": "UBUNTU-CVE-2021-28117",
"modified": "2025-10-24T04:50:13Z",
"published": "2021-03-20T21:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-28117"
},
{
"type": "REPORT",
"url": "https://kde.org/info/security/advisory-20210310-1.txt"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28117"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-28117"
]
}
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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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