CVE-2022-4572: Ubi reader Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-hc37-84v3-8gmq
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CVSS 7.1
CWE-22
Published
Advisory Summary

CVE-2022-4572 is a MODERATE (CVSS 7.1) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Ubi reader libraries in the PyPI ecosystem. The issue involves ubi reader vulnerable to path traversal. Remediation is available by upgrading affected packages to version 0.8.5.

CVE-2022-4572 at a Glance

CVE Identifier CVE-2022-4572
GHSA Identifier GHSA-hc37-84v3-8gmq
Severity MODERATE
CVSS v3.1 Base Score 7.1
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Ubi reader
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.1

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-4572

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

ubi-reader fixed: 0.8.5 
pip install ubi-reader>=0.8.5
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 ubi-reader

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2022-4572, inspect your installed packages using pip:

pip show ubi-reader

Analyze the terminal output to locate any version of Ubi reader in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.8.5), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Ubi reader, 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

A vulnerability, which was classified as problematic, has been found in UBI Reader up to 0.8.0. Affected by this issue is the function ubireader_extract_files of the file ubireader/ubifs/output.py of the component UBIFS File Handler. The manipulation leads to path traversal. The attack may be launched remotely. Upgrading to version 0.8.5 can address this issue. The name of the patch is d5d68e6b1b9f7070c29df5f67fc060f579ae9139. It is recommended to upgrade the affected component. VDB-216146 is the identifier assigned to this vulnerability.

CVE-2022-4572 Affected Ubi reader Versions

1 component(s)
Fixed Versions:
0.8.5
Product / Package Ecosystem Affected Versions Fixed Version
ubi-reader
pypi/ubi-reader
PyPI
< 0.8.5
0.8.5

References

NVD — CVE-2022-4572 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-4572
Ubi reader Source Repository REPOSITORY
https://github.com/jrspruitt/ubi_reader/pull/57
Security Fix Commit FIX COMMIT
https://github.com/jrspruitt/ubi_reader/commit/d5d68e6b1b9f7070c29df5f67fc060f579ae9139
Ubi reader Source Repository REPOSITORY
https://github.com/jrspruitt/ubi_reader
Ubi reader Release RELEASE
https://github.com/jrspruitt/ubi_reader/releases/tag/v0.8.5-master
Ubi reader Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/ubi-reader/PYSEC-2022-43016.yaml
vuldb.com/ WEB
https://vuldb.com/?id.216146

Frequently Asked Questions

What is CVE-2022-4572?
CVE-2022-4572 is a security vulnerability in Ubi reader involving UBI Reader vulnerable to Path Traversal under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Ubi reader versions are affected?
Affected versions include releases prior to 0.8.5 across affected packages: ubi-reader.
What version fixes CVE-2022-4572?
Upgrading to 0.8.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ubi-reader affected?
Yes, ubi-reader is affected in releases prior to 0.8.5. Upgrade your dependency to 0.8.5 or later.
What is the CVSS score of CVE-2022-4572?
CVE-2022-4572 has a CVSS v3.1 base score of 7.1 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.
What CWE is associated with CVE-2022-4572?
CVE-2022-4572 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check PyPI dependencies for CVE-2022-4572?
Run the dependency tree command: 'pip show ubi-reader'. 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-hc37-84v3-8gmq",
  "modified" : "2024-11-18T23:09:08Z",
  "published" : "2022-12-17T03:30:25Z",
  "aliases" : [ "CVE-2022-4572" ],
  "summary" : "UBI Reader vulnerable to Path Traversal",
  "details" : "A vulnerability, which was classified as problematic, has been found in UBI Reader up to 0.8.0. Affected by this issue is the function ubireader_extract_files of the file ubireader/ubifs/output.py of the component UBIFS File Handler. The manipulation leads to path traversal. The attack may be launched remotely. Upgrading to version 0.8.5 can address this issue. The name of the patch is d5d68e6b1b9f7070c29df5f67fc060f579ae9139. It is recommended to upgrade the affected component. VDB-216146 is the identifier assigned to this vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "ubi-reader"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.8.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-4572"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jrspruitt/ubi_reader/pull/57"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jrspruitt/ubi_reader/commit/d5d68e6b1b9f7070c29df5f67fc060f579ae9139"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jrspruitt/ubi_reader"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jrspruitt/ubi_reader/releases/tag/v0.8.5-master"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/ubi-reader/PYSEC-2022-43016.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?id.216146"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-19T18:13:09Z",
    "nvd_published_at" : "2022-12-17T02:15:00Z"
  }
}