GHSA-g9ph-j5vj-f8wm

Suggest an improvement
Source
https://github.com/advisories/GHSA-g9ph-j5vj-f8wm
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/08/GHSA-g9ph-j5vj-f8wm/GHSA-g9ph-j5vj-f8wm.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-g9ph-j5vj-f8wm
Aliases
Published
2024-08-21T18:27:11Z
Modified
2024-08-21T18:42:38.116227Z
Severity
  • 4.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
  • 6.8 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Potential access to sensitive URLs via CKAN extensions (SSRF)
Details

Impact

There are a number of CKAN plugins, including XLoader, DataPusher, Resource proxy and ckanext-archiver, that work by downloading the contents of local or remote files in order to perform some actions with their contents (e.g. pushing to the DataStore, streaming contents or saving a local copy). All of them use the resource URL, and there are currently no checks to limit what URLs can be requested. This means that a malicious (or unaware) user can create a resource with a URL pointing to a place where they should not have access in order for one of the previous tools to retrieve it (known as a Server Side Request Forgery).

Patches and Workarounds

Users wanting to protect against these kinds of attacks can use one or a combination of the following approaches:

  • Use a separate HTTP proxy like Squid that can be used to allow / disallow IPs, domains etc as needed, and make CKAN extensions aware of this setting via the ckan.download_proxy config option.
  • Implement custom firewall rules to prevent access to restricted resources.
  • Use custom validators on the resource url field to block/allow certain domains or IPs.

All latest versions of the plugins linked above support the ckan.download_proxy settings. Support for this setting in the Resource Proxy plugin was included in CKAN 2.10.5 and 2.11.0

References

  • Blog post provides more details on how to configure a Squid proxy to prevent these issues
Database specific 
{
    "nvd_published_at": "2024-08-21T15:15:09Z",
    "cwe_ids": [
        "CWE-918"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2024-08-21T18:27:11Z"
}
References

Affected packages

PyPI / ckan

Package

Name
ckan
View open source insights on deps.dev
Purl
pkg:pypi/ckan

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.10.5

Affected versions

0.*

0.3
0.4
0.5
0.6
0.7
0.8
0.11

1.*

1.0
1.1
1.2
1.3
1.3.2
1.3.3
1.4
1.4.1
1.4.2
1.4.3
1.4.3.1
1.5
1.5.1
1.6
1.7
1.7.1
1.8

2.*

2.0
2.0.1
2.0.7
2.0.8
2.1
2.1.1
2.1.5
2.1.6
2.2
2.2.1
2.2.3
2.2.4
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.4.0
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.4.8
2.4.9
2.5.0
2.5.1
2.5.2
2.5.3
2.5.4
2.5.6
2.5.7
2.5.8
2.5.9
2.6.0
2.6.1
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
2.7.0
2.7.1
2.7.2
2.7.3
2.7.4
2.7.5
2.7.6
2.7.7
2.7.8
2.7.9
2.7.10
2.7.11
2.7.12
2.8.0
2.8.1
2.8.2
2.8.3
2.8.4
2.8.5
2.8.6
2.8.7
2.8.8
2.8.9
2.8.10
2.8.11
2.8.12
2.9.0
2.9.1
2.9.2
2.9.3
2.9.4
2.9.5
2.9.6
2.9.7
2.9.8
2.9.9
2.9.10
2.9.11
2.10.0
2.10.1
2.10.3
2.10.4