ubuntu-cve-2025-52936
Vulnerability from osv_ubuntu
Published
2025-06-23 10:15
Modified
2026-06-01 18:47
Summary
Details
Improper Link Resolution Before File Access ('Link Following') vulnerability in yrutschle sslh.This issue affects sslh: before 2.2.2.
Severity
9.3 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "sslh",
"binary_version": "1.17-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "sslh",
"purl": "pkg:deb/ubuntu/sslh@1.17-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps-legacy/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.17-2ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.17-2"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "sslh",
"binary_version": "1.18-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "sslh",
"purl": "pkg:deb/ubuntu/sslh@1.18-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.18-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "sslh",
"binary_version": "1.20-1+deb11u1build0.20.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "sslh",
"purl": "pkg:deb/ubuntu/sslh@1.20-1+deb11u1build0.20.04.1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.18-1",
"1.20-1",
"1.20-1+deb11u1build0.20.04.1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "sslh",
"binary_version": "1.20-1+deb11u1build0.22.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "sslh",
"purl": "pkg:deb/ubuntu/sslh@1.20-1+deb11u1build0.22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.20-1+deb11u1build0.22.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.20-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "sslh",
"binary_version": "1.22c-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "sslh",
"purl": "pkg:deb/ubuntu/sslh@1.22c-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.22c-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.20-1.1",
"1.22c-1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "sslh",
"binary_version": "2.1.4-1ubuntu0.25.10.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "sslh",
"purl": "pkg:deb/ubuntu/sslh@2.1.4-1ubuntu0.25.10.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.4-1ubuntu0.25.10.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.4-1build1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "sslh",
"binary_version": "2.1.4-1ubuntu0.26.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "sslh",
"purl": "pkg:deb/ubuntu/sslh@2.1.4-1ubuntu0.26.04.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.4-1ubuntu0.26.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.4-1build1",
"2.1.4-1build2"
]
}
],
"aliases": [],
"details": "Improper Link Resolution Before File Access (\u0027Link Following\u0027) vulnerability in yrutschle sslh.This issue affects sslh: before 2.2.2.",
"id": "UBUNTU-CVE-2025-52936",
"modified": "2026-06-01T18:47:47Z",
"published": "2025-06-23T10:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-52936"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-52936"
},
{
"type": "REPORT",
"url": "https://github.com/yrutschle/sslh/pull/494"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8360-1"
}
],
"related": [
"USN-8360-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/S:N/AU:Y/R:U/V:C/RE:M/U:Amber",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-52936"
]
}
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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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