gsd-2022-41925
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
A vulnerability identified in the Tailscale client allows a malicious website to access the peer API, which can then be used to access Tailscale environment variables. In the Tailscale client, the peer API was vulnerable to DNS rebinding. This allowed an attacker-controlled website visited by the node to rebind DNS for the peer API to an attacker-controlled DNS server, and then making peer API requests in the client, including accessing the node’s Tailscale environment variables. An attacker with access to the peer API on a node could use that access to read the node’s environment variables, including any credentials or secrets stored in environment variables. This may include Tailscale authentication keys, which could then be used to add new nodes to the user’s tailnet. The peer API access could also be used to learn of other nodes in the tailnet or send files via Taildrop. All Tailscale clients prior to version v1.32.3 are affected. Upgrade to v1.32.3 or later to remediate the issue.
Aliases
Aliases
CVE-2022-41925


To clipboard 

{
   GSD: {
      alias: "CVE-2022-41925",
      id: "GSD-2022-41925",
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2022-41925",
         ],
         details: "A vulnerability identified in the Tailscale client allows a malicious website to access the peer API, which can then be used to access Tailscale environment variables. In the Tailscale client, the peer API was vulnerable to DNS rebinding. This allowed an attacker-controlled website visited by the node to rebind DNS for the peer API to an attacker-controlled DNS server, and then making peer API requests in the client, including accessing the node’s Tailscale environment variables. An attacker with access to the peer API on a node could use that access to read the node’s environment variables, including any credentials or secrets stored in environment variables. This may include Tailscale authentication keys, which could then be used to add new nodes to the user’s tailnet. The peer API access could also be used to learn of other nodes in the tailnet or send files via Taildrop. All Tailscale clients prior to version v1.32.3 are affected. Upgrade to v1.32.3 or later to remediate the issue.",
         id: "GSD-2022-41925",
         modified: "2023-12-13T01:19:32.966508Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "security-advisories@github.com",
            ID: "CVE-2022-41925",
            STATE: "PUBLIC",
            TITLE: "Tailscale daemon is vulnerable to information disclosure via CSRF",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "tailscale",
                              version: {
                                 version_data: [
                                    {
                                       version_value: "< 1.32.3",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "tailscale",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "A vulnerability identified in the Tailscale client allows a malicious website to access the peer API, which can then be used to access Tailscale environment variables. In the Tailscale client, the peer API was vulnerable to DNS rebinding. This allowed an attacker-controlled website visited by the node to rebind DNS for the peer API to an attacker-controlled DNS server, and then making peer API requests in the client, including accessing the node’s Tailscale environment variables. An attacker with access to the peer API on a node could use that access to read the node’s environment variables, including any credentials or secrets stored in environment variables. This may include Tailscale authentication keys, which could then be used to add new nodes to the user’s tailnet. The peer API access could also be used to learn of other nodes in the tailnet or send files via Taildrop. All Tailscale clients prior to version v1.32.3 are affected. Upgrade to v1.32.3 or later to remediate the issue.",
               },
            ],
         },
         impact: {
            cvss: {
               attackComplexity: "LOW",
               attackVector: "ADJACENT",
               availabilityImpact: "NONE",
               baseScore: 3.8,
               baseSeverity: "LOW",
               confidentialityImpact: "LOW",
               integrityImpact: "NONE",
               privilegesRequired: "NONE",
               scope: "CHANGED",
               userInteraction: "REQUIRED",
               vectorString: "CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N",
               version: "3.0",
            },
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "CWE-352: Cross-Site Request Forgery (CSRF)",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://github.com/tailscale/tailscale/security/advisories/GHSA-qccm-wmcq-pwr6",
                  refsource: "CONFIRM",
                  url: "https://github.com/tailscale/tailscale/security/advisories/GHSA-qccm-wmcq-pwr6",
               },
               {
                  name: "https://emily.id.au/tailscale",
                  refsource: "MISC",
                  url: "https://emily.id.au/tailscale",
               },
               {
                  name: "https://tailscale.com/security-bulletins/#ts-2022-005",
                  refsource: "MISC",
                  url: "https://tailscale.com/security-bulletins/#ts-2022-005",
               },
            ],
         },
         source: {
            advisory: "GHSA-qccm-wmcq-pwr6",
            discovery: "UNKNOWN",
         },
      },
      "gitlab.com": {
         advisories: [
            {
               affected_range: "<1.32.3",
               affected_versions: "All versions before 1.32.3",
               cwe_ids: [
                  "CWE-1035",
                  "CWE-78",
                  "CWE-937",
               ],
               date: "2022-11-21",
               description: "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in tailscale.com/cmd.",
               fixed_versions: [
                  "1.32.3",
               ],
               identifier: "GMS-2022-6915",
               identifiers: [
                  "GHSA-qccm-wmcq-pwr6",
                  "GMS-2022-6915",
                  "CVE-2022-41925",
               ],
               not_impacted: "All versions starting from 1.32.3",
               package_slug: "go/tailscale.com/cmd",
               pubdate: "2022-11-21",
               solution: "Upgrade to version 1.32.3 or above.",
               title: "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')",
               urls: [
                  "https://github.com/tailscale/tailscale/security/advisories/GHSA-qccm-wmcq-pwr6",
                  "https://github.com/advisories/GHSA-qccm-wmcq-pwr6",
               ],
               uuid: "2face61e-fa5b-4d21-9875-9d3565f4cdb5",
            },
         ],
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:tailscale:tailscale:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "1.32.3",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
            ],
         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "security-advisories@github.com",
               ID: "CVE-2022-41925",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     lang: "en",
                     value: "A vulnerability identified in the Tailscale client allows a malicious website to access the peer API, which can then be used to access Tailscale environment variables. In the Tailscale client, the peer API was vulnerable to DNS rebinding. This allowed an attacker-controlled website visited by the node to rebind DNS for the peer API to an attacker-controlled DNS server, and then making peer API requests in the client, including accessing the node’s Tailscale environment variables. An attacker with access to the peer API on a node could use that access to read the node’s environment variables, including any credentials or secrets stored in environment variables. This may include Tailscale authentication keys, which could then be used to add new nodes to the user’s tailnet. The peer API access could also be used to learn of other nodes in the tailnet or send files via Taildrop. All Tailscale clients prior to version v1.32.3 are affected. Upgrade to v1.32.3 or later to remediate the issue.",
                  },
               ],
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "en",
                           value: "CWE-352",
                        },
                     ],
                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://github.com/tailscale/tailscale/security/advisories/GHSA-qccm-wmcq-pwr6",
                     refsource: "CONFIRM",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://github.com/tailscale/tailscale/security/advisories/GHSA-qccm-wmcq-pwr6",
                  },
                  {
                     name: "https://emily.id.au/tailscale",
                     refsource: "MISC",
                     tags: [
                        "Exploit",
                        "Technical Description",
                        "Third Party Advisory",
                     ],
                     url: "https://emily.id.au/tailscale",
                  },
                  {
                     name: "https://tailscale.com/security-bulletins/#ts-2022-005",
                     refsource: "MISC",
                     tags: [
                        "Vendor Advisory",
                     ],
                     url: "https://tailscale.com/security-bulletins/#ts-2022-005",
                  },
               ],
            },
         },
         impact: {
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "LOW",
                  attackVector: "ADJACENT_NETWORK",
                  availabilityImpact: "HIGH",
                  baseScore: 8.8,
                  baseSeverity: "HIGH",
                  confidentialityImpact: "HIGH",
                  integrityImpact: "HIGH",
                  privilegesRequired: "NONE",
                  scope: "CHANGED",
                  userInteraction: "REQUIRED",
                  vectorString: "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
                  version: "3.1",
               },
               exploitabilityScore: 2.1,
               impactScore: 6,
            },
         },
         lastModifiedDate: "2022-12-01T17:10Z",
         publishedDate: "2022-11-23T19:15Z",
      },
   },
}


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