GHSA-q6mv-284r-mp36

Suggest an improvement
Source
https://github.com/advisories/GHSA-q6mv-284r-mp36
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/12/GHSA-q6mv-284r-mp36/GHSA-q6mv-284r-mp36.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-q6mv-284r-mp36
Aliases
Published
2024-12-02T17:29:05Z
Modified
2024-12-02T17:42:20.739880Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N CVSS Calculator
  • 6.1 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N CVSS Calculator
Summary
check-jsonschema default caching for remote schemas allows for cache confusion
Details

Impact

The default cache strategy uses the basename of a remote schema as the name of the file in the cache, e.g. https://example.org/schema.json will be stored as schema.json. This naming allows for conflicts. If an attacker can get a user to run check-jsonschema against a malicious schema URL, e.g., https://example.evil.org/schema.json, they can insert their own schema into the cache and it will be picked up and used instead of the appropriate schema.

Such a cache confusion attack could be used to allow data to pass validation which should have been rejected.

Patches

A patch is in progress but has not yet been released.

Workarounds

  • Users can use --no-cache to disable caching.
  • Users can use --cache-filename to select filenames for use in the cache, or to ensure that other usages do not overwrite the cached schema. (Note: this flag is being deprecated as part of the remediation effort.)
  • Users can explicitly download the schema before use as a local file, as in curl -LOs https://example.org/schema.json; check-jsonschema --schemafile ./schema.json
Database specific 
{
    "cwe_ids": [
        "CWE-349"
    ],
    "github_reviewed_at": "2024-12-02T17:29:05Z",
    "severity": "MODERATE",
    "nvd_published_at": "2024-11-29T19:15:09Z",
    "github_reviewed": true
}
References

Affected packages

PyPI / check-jsonschema

Package

Name
check-jsonschema
View open source insights on deps.dev
Purl
pkg:pypi/check-jsonschema

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.30.0

Affected versions

0.*

0.1.0
0.1.1
0.2.0
0.2.1
0.3.0
0.3.1
0.3.2
0.4.0
0.4.1
0.5.0
0.5.1
0.6.0
0.7.0
0.7.1
0.8.0
0.8.1
0.8.2
0.9.0
0.9.1
0.10.0
0.10.1
0.10.2
0.11.0
0.12.0
0.13.0
0.14.0
0.14.1
0.14.2
0.14.3
0.15.0
0.15.1
0.16.0
0.16.1
0.16.2
0.17.0
0.17.1
0.18.0
0.18.1
0.18.2
0.18.3
0.18.4
0.19.0
0.19.1
0.19.2
0.20.0
0.21.0
0.22.0
0.23.0
0.23.1
0.23.2
0.23.3
0.24.0
0.24.1
0.25.0
0.26.0
0.26.1
0.26.2
0.26.3
0.27.0
0.27.1
0.27.2
0.27.3
0.27.4
0.28.0
0.28.1
0.28.2
0.28.3
0.28.4
0.28.5
0.28.6
0.29.0
0.29.1
0.29.2
0.29.3
0.29.4