CVE-2022-31471: Untangle Untangle Vulnerable To Improper Restriction Vulnerability

HIGH
Advisory Identifier: GHSA-f83q-2cp7-qrjg
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CVSS 7.5
CWE-611
Published
Advisory Summary

CVE-2022-31471 is a HIGH (CVSS 7.5) untangle vulnerable to improper restriction vulnerability (CWE-611: Improper Restriction of XML External Entity Reference) affecting Untangle libraries in the PyPI ecosystem. The issue involves untangle vulnerable to improper restriction of xml external entity reference. Remediation is available by upgrading affected packages to version 1.2.1.

CVE-2022-31471 at a Glance

CVE Identifier CVE-2022-31471
GHSA Identifier GHSA-f83q-2cp7-qrjg
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-611: Improper Restriction of XML External Entity Reference
Affected Product Untangle
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:U/C:H/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 Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2022-31471

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

untangle fixed: 1.2.1 
pip install untangle>=1.2.1
Verify Direct and Transitive Dependencies

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

pip show untangle

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2022-31471, inspect your installed packages using pip:

pip show untangle

Analyze the terminal output to locate any version of Untangle in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.2.1), your application is affected.

Note: The pip show untangle command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-611: Improper Restriction of XML External Entity Reference, where the product processes an xml document that can contain xml entities with uris that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. In Untangle, 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

### Description untangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts XML external entity references. By exploiting this vulnerability, a remote unauthenticated attacker may read the contents of local files. ### Impact An attacker may be able to read the contents of local files. This affects untangle versions up to and including 1.2.0 ### Patches The problem has been fixed with version 1.2.1 ### Workarounds None ### References https://jvn.jp/en/jp/JVN30454777/ ### For more information If you have any questions or comments about this advisory: * Open an [issue](https://github.com/stchris/untangle/issues)

CVE-2022-31471 Affected Untangle Versions

1 component(s)
Fixed Versions:
1.2.1
Product / Package Ecosystem Affected Versions Fixed Version
untangle
pypi/untangle
PyPI
< 1.2.1
1.2.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/stchris/untangle/security/advisories/GHSA-f83q-2cp7-qrjg
NVD — CVE-2022-31471 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-31471
Untangle Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/untangle/PYSEC-2022-244.yaml
Untangle Source Repository REPOSITORY
https://github.com/stchris/untangle
Untangle Release RELEASE
https://github.com/stchris/untangle/releases/tag/1.2.1
jvn.jp/en/jp/jvn30454777 WEB
https://jvn.jp/en/jp/JVN30454777

Frequently Asked Questions

What is CVE-2022-31471?
CVE-2022-31471 is a security vulnerability in Untangle involving untangle vulnerable to Improper Restriction of XML External Entity Reference under CWE-611: Improper Restriction of XML External Entity Reference.
Which Untangle versions are affected?
Affected versions include releases prior to 1.2.1 across affected packages: untangle.
What version fixes CVE-2022-31471?
Upgrading to 1.2.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is untangle affected?
Yes, untangle is affected in releases prior to 1.2.1. Upgrade your dependency to 1.2.1 or later.
What is the CVSS score of CVE-2022-31471?
CVE-2022-31471 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2022-31471?
CVE-2022-31471 is classified under CWE-611: Improper Restriction of XML External Entity Reference (The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.).
How can I check PyPI dependencies for CVE-2022-31471?
Run the dependency tree command: 'pip show untangle'. 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-f83q-2cp7-qrjg",
  "modified" : "2024-11-18T23:02:45Z",
  "published" : "2022-08-06T05:30:13Z",
  "aliases" : [ "CVE-2022-31471" ],
  "summary" : "untangle vulnerable to Improper Restriction of XML External Entity Reference",
  "details" : "### Description\nuntangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts XML external entity references. By exploiting this vulnerability, a remote unauthenticated attacker may read the contents of local files.\n\n### Impact\nAn attacker may be able to read the contents of local files. This affects untangle versions up to and including 1.2.0\n\n### Patches\nThe problem has been fixed with version 1.2.1\n\n### Workarounds\nNone\n\n### References\nhttps://jvn.jp/en/jp/JVN30454777/\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an [issue](https://github.com/stchris/untangle/issues)\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "untangle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/stchris/untangle/security/advisories/GHSA-f83q-2cp7-qrjg"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-31471"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/untangle/PYSEC-2022-244.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/stchris/untangle"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/stchris/untangle/releases/tag/1.2.1"
  }, {
    "type" : "WEB",
    "url" : "https://jvn.jp/en/jp/JVN30454777"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-611" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-08-06T05:30:13Z",
    "nvd_published_at" : "2022-07-26T06:15:00Z"
  }
}