UBUNTU-CVE-2026-83603 (CVE-2026-83603)
Vulnerability from osv_ubuntu – Published: 2026-09-22 17:17 – Updated: 2026-09-22 17:17 – Source website
VLAI
Details
Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.
Severity
8.4 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netdata",
"binary_version": "1.9.0+dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "netdata-data",
"binary_version": "1.9.0+dfsg-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "netdata",
"purl": "pkg:deb/ubuntu/netdata@1.9.0+dfsg-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.7.0+dfsg-1",
"1.8.0+dfsg-1",
"1.9.0+dfsg-1",
"1.9.0+dfsg-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netdata",
"binary_version": "1.19.0-3ubuntu1+esm1"
},
{
"binary_name": "netdata-apache2",
"binary_version": "1.19.0-3ubuntu1+esm1"
},
{
"binary_name": "netdata-core",
"binary_version": "1.19.0-3ubuntu1+esm1"
},
{
"binary_name": "netdata-plugins-bash",
"binary_version": "1.19.0-3ubuntu1+esm1"
},
{
"binary_name": "netdata-plugins-nodejs",
"binary_version": "1.19.0-3ubuntu1+esm1"
},
{
"binary_name": "netdata-plugins-python",
"binary_version": "1.19.0-3ubuntu1+esm1"
},
{
"binary_name": "netdata-web",
"binary_version": "1.19.0-3ubuntu1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "netdata",
"purl": "pkg:deb/ubuntu/netdata@1.19.0-3ubuntu1+esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.16.1-2",
"1.19.0-3ubuntu1",
"1.19.0-3ubuntu1+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netdata",
"binary_version": "1.33.1-1ubuntu1+esm1"
},
{
"binary_name": "netdata-apache2",
"binary_version": "1.33.1-1ubuntu1+esm1"
},
{
"binary_name": "netdata-core",
"binary_version": "1.33.1-1ubuntu1+esm1"
},
{
"binary_name": "netdata-plugins-bash",
"binary_version": "1.33.1-1ubuntu1+esm1"
},
{
"binary_name": "netdata-plugins-nodejs",
"binary_version": "1.33.1-1ubuntu1+esm1"
},
{
"binary_name": "netdata-plugins-python",
"binary_version": "1.33.1-1ubuntu1+esm1"
},
{
"binary_name": "netdata-web",
"binary_version": "1.33.1-1ubuntu1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "netdata",
"purl": "pkg:deb/ubuntu/netdata@1.33.1-1ubuntu1+esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.29.3-4",
"1.31.0-4",
"1.33.1-1ubuntu1",
"1.33.1-1ubuntu1+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netdata",
"binary_version": "1.43.2-1build2"
},
{
"binary_name": "netdata-apache2",
"binary_version": "1.43.2-1build2"
},
{
"binary_name": "netdata-core",
"binary_version": "1.43.2-1build2"
},
{
"binary_name": "netdata-plugins-bash",
"binary_version": "1.43.2-1build2"
},
{
"binary_name": "netdata-plugins-python",
"binary_version": "1.43.2-1build2"
},
{
"binary_name": "netdata-web",
"binary_version": "1.43.2-1build2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "netdata",
"purl": "pkg:deb/ubuntu/netdata@1.43.2-1build2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.42.1-1",
"1.43.1-1",
"1.43.2-1",
"1.43.2-1build1",
"1.43.2-1build2"
]
}
],
"aliases": [],
"details": "Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.",
"id": "UBUNTU-CVE-2026-83603",
"modified": "2026-09-22T17:17:00Z",
"published": "2026-09-22T17:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-83603"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-83603"
},
{
"type": "REPORT",
"url": "https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060"
},
{
"type": "REPORT",
"url": "https://github.com/netdata/netdata/pull/22745"
},
{
"type": "REPORT",
"url": "https://github.com/netdata/netdata/releases/tag/v2.10.4"
},
{
"type": "REPORT",
"url": "https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993w"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-83603"
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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