FKIE_CVE-2026-102371

Vulnerability from fkie_nvd - Published: 2026-09-29 15:17 - Updated: 2026-09-30 16:17
Severity
5.7 (Medium) - 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
Summary
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 <token>). 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/<pid>/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
security@ubuntu.comhttps://github.com/canonical/ubuntu-pro-for-wsl/commit/11c164a37b806bcf2a2304beb0d65e406739778b
security@ubuntu.comhttps://github.com/canonical/ubuntu-pro-for-wsl/pull/1816
security@ubuntu.comhttps://ubuntu.com/security/CVE-2026-102371
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageName": "wsl-pro-service",
          "platforms": [
            "Linux"
          ],
          "product": "Ubuntu Pro for WSL",
          "repo": "https://github.com/canonical/ubuntu-pro-for-wsl",
          "vendor": "Canonical",
          "versions": [
            {
              "lessThan": "0.1.19ubuntu2",
              "status": "affected",
              "version": "0.1.1",
              "versionType": "ubuntu-resolute"
            },
            {
              "lessThan": "0.1.18~24.04.3",
              "status": "affected",
              "version": "0.1.1",
              "versionType": "ubuntu-noble"
            },
            {
              "lessThan": "0.1.18~22.04.2",
              "status": "affected",
              "version": "0.1.1",
              "versionType": "ubuntu-jammy"
            },
            {
              "lessThan": "0.1.18~20.04.2",
              "status": "affected",
              "version": "0.1.1",
              "versionType": "ubuntu-focal"
            }
          ]
        }
      ],
      "source": "security@ubuntu.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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 \u003ctoken\u003e). 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/\u003cpid\u003e/cmdline while the attach process is running. The leaked token could then be used to attach other machines to the victim\u0027s Ubuntu Pro subscription and gain unauthorized access to Ubuntu Pro services."
    }
  ],
  "id": "CVE-2026-102371",
  "lastModified": "2026-09-30T16:17:06.147",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.7,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security@ubuntu.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-102371",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-30T15:17:31.871369Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-29T15:17:17.557",
  "references": [
    {
      "source": "security@ubuntu.com",
      "url": "https://github.com/canonical/ubuntu-pro-for-wsl/commit/11c164a37b806bcf2a2304beb0d65e406739778b"
    },
    {
      "source": "security@ubuntu.com",
      "url": "https://github.com/canonical/ubuntu-pro-for-wsl/pull/1816"
    },
    {
      "source": "security@ubuntu.com",
      "url": "https://ubuntu.com/security/CVE-2026-102371"
    }
  ],
  "sourceIdentifier": "security@ubuntu.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-214"
        }
      ],
      "source": "security@ubuntu.com",
      "type": "Secondary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.