CVE-2022-39215: Tauri Tauri's ReadDir Endpoint Scope Can Vulnerability

MODERATE
Advisory Identifier: GHSA-28m8-9j7v-x499
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CVSS 5.8
CWE-59 CWE-22
Published
Advisory Summary

CVE-2022-39215 is a MODERATE (CVSS 5.8) tauri's readdir endpoint scope can vulnerability (CWE-59: Improper Link Resolution Before File Access ('Link Following')) affecting Tauri libraries in the crates.io ecosystem. The issue involves tauri's readdir endpoint scope can be bypassed with symbolic links. Remediation is available by upgrading affected packages to version 1.0.6.

CVE-2022-39215 at a Glance

CVE Identifier CVE-2022-39215
GHSA Identifier GHSA-28m8-9j7v-x499
Severity MODERATE
CVSS v3.1 Base Score 5.8
CWE Classification CWE-59: Improper Link Resolution Before File Access ('Link Following')
Affected Product Tauri
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 5.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2022-39215

To remediate this vulnerability, upgrade all affected Tauri dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

tauri fixed: 1.0.6 
Upgrade tauri to 1.0.6
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for tauri

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-39215, inspect your project dependencies for Tauri:

inspect dependencies for tauri

Analyze the terminal output to locate any version of Tauri in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.6), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-59: Improper Link Resolution Before File Access ('Link Following'), where the product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. In Tauri, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Due to missing canonicalization when `readDir` is called recursively, it was possible to display directory listings outside of the defined `fs` scope. This required a crafted symbolic link or junction folder inside an allowed path of the `fs` scope. No arbitrary file content could be leaked. ### Patches The issue has been resolved in https://github.com/tauri-apps/tauri/pull/5123 and the implementation now properly checks if the requested (sub) directory is a symbolic link outside of the defined `scope`. ### Workarounds Disable the `readDir` endpoint in the `allowlist` inside the `tauri.conf.json`. ### For more information This issue was initially reported by [martin-ocasek]( https://github.com/martin-ocasek) in [#4882](https://github.com/tauri-apps/tauri/issues/4882). If you have any questions or comments about this advisory: * Open an issue in [tauri](https://github.com/tauri-apps/tauri) * Email us at [security@tauri.app](mailto:security@tauri.app)

CVE-2022-39215 Affected Tauri Versions

1 component(s)
Fixed Versions:
1.0.6
Product / Package Ecosystem Affected Versions Fixed Version
tauri
 crates.io
< 1.0.6
1.0.6

References

NVD — CVE-2022-39215 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-39215
GitHub Advisory / Wiki ADVISORY
https://github.com/tauri-apps/tauri/security/advisories/GHSA-28m8-9j7v-x499
Tauri Source Repository REPOSITORY
https://github.com/tauri-apps/tauri/issues/4882
Tauri Source Repository REPOSITORY
https://github.com/tauri-apps/tauri/pull/5123
Tauri Source Repository REPOSITORY
https://github.com/tauri-apps/tauri/pull/5123/commits/1f9b9e8d26a2c915390323e161020bcb36d44678
Security Fix Commit FIX COMMIT
https://github.com/tauri-apps/tauri/commit/bb178829086e80916f9be190f02d83bc25802799
Tauri Source Repository REPOSITORY
https://github.com/tauri-apps/tauri
Tauri Release RELEASE
https://github.com/tauri-apps/tauri/releases/tag/tauri-v1.0.6
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2022-0088.html

Frequently Asked Questions

What is CVE-2022-39215?
CVE-2022-39215 is a security vulnerability in Tauri involving Tauri's readDir Endpoint Scope can be Bypassed With Symbolic Links under CWE-59: Improper Link Resolution Before File Access ('Link Following').
Which Tauri versions are affected?
Affected versions include releases prior to 1.0.6 across affected packages: tauri.
What version fixes CVE-2022-39215?
Upgrading to 1.0.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tauri affected?
Yes, tauri is affected in releases prior to 1.0.6. Upgrade your dependency to 1.0.6 or later.
What is the CVSS score of CVE-2022-39215?
CVE-2022-39215 has a CVSS v3.1 base score of 5.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.
What CWE is associated with CVE-2022-39215?
CVE-2022-39215 is classified under CWE-59: Improper Link Resolution Before File Access ('Link Following') (The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.).
How can I check crates.io dependencies for CVE-2022-39215?
Run the dependency tree command: 'inspect dependencies for tauri'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-28m8-9j7v-x499",
  "modified" : "2022-09-22T17:28:05Z",
  "published" : "2022-09-16T19:28:49Z",
  "aliases" : [ "CVE-2022-39215" ],
  "summary" : "Tauri's readDir Endpoint Scope can be Bypassed With Symbolic Links",
  "details" : "### Impact\nDue to missing canonicalization when `readDir` is called recursively, it was possible to display directory listings outside of the defined `fs` scope. This required a crafted symbolic link or junction folder inside an allowed path of the `fs` scope. No arbitrary file content could be leaked.\n\n\n### Patches\nThe issue has been resolved in https://github.com/tauri-apps/tauri/pull/5123 and the implementation now properly checks if the\nrequested (sub) directory is a symbolic link outside of the defined `scope`.\n\n### Workarounds\nDisable the `readDir` endpoint in the `allowlist` inside the `tauri.conf.json`.\n\n### For more information\n\nThis issue was initially reported by [martin-ocasek]( https://github.com/martin-ocasek) in [#4882](https://github.com/tauri-apps/tauri/issues/4882).\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [tauri](https://github.com/tauri-apps/tauri)\n* Email us at [security@tauri.app](mailto:security@tauri.app)\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "tauri"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/tauri-apps/tauri/security/advisories/GHSA-28m8-9j7v-x499"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-39215"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tauri-apps/tauri/issues/4882"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tauri-apps/tauri/pull/5123"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tauri-apps/tauri/pull/5123/commits/1f9b9e8d26a2c915390323e161020bcb36d44678"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tauri-apps/tauri/commit/bb178829086e80916f9be190f02d83bc25802799"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/tauri-apps/tauri"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tauri-apps/tauri/releases/tag/tauri-v1.0.6"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2022-0088.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22", "CWE-59" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-09-16T19:28:49Z",
    "nvd_published_at" : "2022-09-15T22:15:00Z"
  }
}