Vulnerability-Lookup

GHSA-VQP6-RC3H-83CP

Vulnerability from github – Published: 2022-11-21 22:34 – Updated: 2022-11-21 22:34

Summary

Tailscale Windows daemon is vulnerable to RCE via CSRF

Details

A vulnerability identified in the Tailscale Windows client allows a malicious website to reconfigure the Tailscale daemon tailscaled, which can then be used to remotely execute code.

Affected platforms: Windows Patched Tailscale client versions: v1.32.3 or later, v1.33.257 or later (unstable)

What happened?

In the Tailscale Windows client, the local API was bound to a local TCP socket, and communicated with the Windows client GUI in cleartext with no Host header verification. This allowed an attacker-controlled website visited by the node to rebind DNS to an attacker-controlled DNS server, and then make local API requests in the client, including changing the coordination server to an attacker-controlled coordination server.

Who is affected?

All Windows clients prior to version v.1.32.3 are affected.

What should I do?

If you are running Tailscale on Windows, upgrade to v1.32.3 or later to remediate the issue.

What is the impact?

An attacker-controlled coordination server can send malicious URL responses to the client, including pushing executables or installing an SMB share. These allow the attacker to remotely execute code on the node.

Reviewing all logs confirms this vulnerability was not triggered or exploited.

Credits

We would like to thank Emily Trau and Jamie McClymont (CyberCX) for reporting this issue. Further detail is available in their blog post.

References

For more information

If you have any questions or comments about this advisory, contact Tailscale support.

Severity ?

9.6 (Critical)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:H

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "tailscale.com"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.32.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-41924"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-346",
      "CWE-352"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-11-21T22:34:00Z",
    "nvd_published_at": "2022-11-23T19:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "A vulnerability identified in the Tailscale Windows client allows a malicious website to reconfigure the Tailscale daemon `tailscaled`, which can then be used to remotely execute code.\n\n**Affected platforms:** Windows\n**Patched Tailscale client versions:** v1.32.3 or later, v1.33.257 or later (unstable)\n\n### What happened?\nIn the Tailscale Windows client, the local API was bound to a local TCP socket, and communicated with the Windows client GUI in cleartext with no Host header verification. This allowed an attacker-controlled website visited by the node to rebind DNS to an attacker-controlled DNS server, and then make local API requests in the client, including changing the coordination server to an attacker-controlled coordination server.\n\n### Who is affected?\nAll Windows clients prior to version v.1.32.3 are affected.\n\n### What should I do?\nIf you are running Tailscale on Windows, upgrade to v1.32.3 or later to remediate the issue.\n\n### What is the impact?\nAn attacker-controlled coordination server can send malicious URL responses to the client, including pushing executables or installing an SMB share. These allow the attacker to remotely execute code on the node.\n\nReviewing all logs confirms this vulnerability was not triggered or exploited. \n\n### Credits\nWe would like to thank [Emily Trau](https://github.com/emilytrau) and [Jamie McClymont (CyberCX)](https://twitter.com/JJJollyjim) for reporting this issue. Further detail is available in [their blog post](https://emily.id.au/tailscale).\n\n### References\n* [TS-2022-004](https://tailscale.com/security-bulletins/#ts-2022-004)\n* [Researcher blog post](https://emily.id.au/tailscale)\n\n### For more information\nIf you have any questions or comments about this advisory, [contact Tailscale support](https://tailscale.com/contact/support/).\n",
  "id": "GHSA-vqp6-rc3h-83cp",
  "modified": "2022-11-21T22:34:00Z",
  "published": "2022-11-21T22:34:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tailscale/tailscale/security/advisories/GHSA-vqp6-rc3h-83cp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41924"
    },
    {
      "type": "WEB",
      "url": "https://emily.id.au/tailscale"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tailscale/tailscale"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tailscale/tailscale/releases/tag/v1.32.3"
    },
    {
      "type": "WEB",
      "url": "https://tailscale.com/security-bulletins/#ts-2022-004"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Tailscale Windows daemon is vulnerable to RCE via CSRF"
}

CVE-2022-41924 (GCVE-0-2022-41924)

Vulnerability from cvelistv5 – Published: 2022-11-23 00:00 – Updated: 2025-04-22 16:01

Title

Tailscale Windows daemon is vulnerable to RCE via CSRF

Summary

A vulnerability identified in the Tailscale Windows client allows a malicious website to reconfigure the Tailscale daemon `tailscaled`, which can then be used to remotely execute code. In the Tailscale Windows client, the local API was bound to a local TCP socket, and communicated with the Windows client GUI in cleartext with no Host header verification. This allowed an attacker-controlled website visited by the node to rebind DNS to an attacker-controlled DNS server, and then make local API requests in the client, including changing the coordination server to an attacker-controlled coordination server. An attacker-controlled coordination server can send malicious URL responses to the client, including pushing executables or installing an SMB share. These allow the attacker to remotely execute code on the node. All Windows clients prior to version v.1.32.3 are affected. If you are running Tailscale on Windows, upgrade to v1.32.3 or later to remediate the issue.

Severity ?

9.6 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:H

CWE

CWE-346 - Origin Validation Error
CWE-352 - Cross-Site Request Forgery (CSRF)

Assigner

GitHub_M

References

URL

Tags

	https://emily.id.au/tailscale
	https://github.com/tailscale/tailscale/security/a…
	https://tailscale.com/security-bulletins/#ts-2022-004

Impacted products

	Vendor	Product	Version
	tailscale	tailscale	Affected: < 1.32.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T12:56:38.505Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://emily.id.au/tailscale"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/tailscale/tailscale/security/advisories/GHSA-vqp6-rc3h-83cp"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://tailscale.com/security-bulletins/#ts-2022-004"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-41924",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-22T15:41:17.008228Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-22T16:01:49.755Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "tailscale",
          "vendor": "tailscale",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.32.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability identified in the Tailscale Windows client allows a malicious website to reconfigure the Tailscale daemon `tailscaled`, which can then be used to remotely execute code. In the Tailscale Windows client, the local API was bound to a local TCP socket, and communicated with the Windows client GUI in cleartext with no Host header verification. This allowed an attacker-controlled website visited by the node to rebind DNS to an attacker-controlled DNS server, and then make local API requests in the client, including changing the coordination server to an attacker-controlled coordination server. An attacker-controlled coordination server can send malicious URL responses to the client, including pushing executables or installing an SMB share. These allow the attacker to remotely execute code on the node. All Windows clients prior to version v.1.32.3 are affected. If you are running Tailscale on Windows, upgrade to v1.32.3 or later to remediate the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:H",
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          }
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      ],
      "problemTypes": [
        {
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        {
          "descriptions": [
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              "cweId": "CWE-352",
              "description": "CWE-352: Cross-Site Request Forgery (CSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-11-23T00:00:00.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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      },
      "references": [
        {
          "url": "https://emily.id.au/tailscale"
        },
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          "url": "https://github.com/tailscale/tailscale/security/advisories/GHSA-vqp6-rc3h-83cp"
        },
        {
          "url": "https://tailscale.com/security-bulletins/#ts-2022-004"
        }
      ],
      "source": {
        "advisory": "GHSA-vqp6-rc3h-83cp",
        "discovery": "UNKNOWN"
      },
      "title": "Tailscale Windows daemon is vulnerable to RCE via CSRF"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "datePublished": "2022-11-23T00:00:00.000Z",
    "dateReserved": "2022-09-30T00:00:00.000Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-VQP6-RC3H-83CP

What happened?

Who is affected?

What should I do?

What is the impact?

Credits

References

For more information

CVE-2022-41924 (GCVE-0-2022-41924)

Tags

Sightings

Nomenclature