UBUNTU-CVE-2026-102371

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Source
https://ubuntu.com/security/CVE-2026-102371
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102371.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-102371
Upstream
Published
2026-09-29T15:17:00Z
Modified
2026-10-01T00:21:05Z
Severity
  • 5.7 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In wsl-pro-service before 0.1.19ubuntu3, the service component which runs as root inside each WSL instance attaches the instance to Ubuntu Pro by executing the pro client with the Ubuntu Pro token passed as a command-line argument (pro attach ). On systems where /proc is mounted without process-hiding mitigations (such as hidepid), which is the default in WSL, an unprivileged local user or process in the same WSL instance can read the token from /proc//cmdline while the attach process is running. The leaked token could then be used to attach other machines to the victim's Ubuntu Pro subscription and gain unauthorized access to Ubuntu Pro services.

References

Affected packages

Ubuntu:22.04:LTS / wsl-pro-service

Package

Name
wsl-pro-service
Purl
pkg:deb/ubuntu/wsl-pro-service?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.1.18~22.04.2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "wsl-pro-service",
            "binary_version":  "0.1.18~22.04.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102371.json"

Ubuntu:24.04:LTS / wsl-pro-service

Package

Name
wsl-pro-service
Purl
pkg:deb/ubuntu/wsl-pro-service?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.1
0.1.1
0.1.2
0.1.2build1
0.1.4
0.1.18~24.04.3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "wsl-pro-service",
            "binary_version":  "0.1.18~24.04.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102371.json"

Ubuntu:26.04:LTS / wsl-pro-service

Package

Name
wsl-pro-service
Purl
pkg:deb/ubuntu/wsl-pro-service?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.1.18
0.1.18build1
0.1.19ubuntu1
0.1.19ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "wsl-pro-service",
            "binary_version":  "0.1.19ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102371.json"