CVE-2021-39371: XEE
First published: Mon Aug 23 2021(Updated: )
An XML external entity (XXE) injection in PyWPS before 4.4.5 allows an attacker to view files on the application server filesystem by assigning a path to the entity. OWSLib 0.24.1 may also be affected.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Osgeo Owslib | =0.24.1 | |
| Osgeo Pywps | <4.4.5 | |
| Debian Debian Linux | =9.0 | |
| pip/pywps | <4.5.0 | 4.5.0 |
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Reference Links
- https://github.com/geopython/OWSLib/issues/790
- https://github.com/geopython/pywps/pull/616
- https://lists.debian.org/debian-lts-announce/2021/09/msg00001.html
- https://nvd.nist.gov/vuln/detail/CVE-2021-39371
- https://github.com/geopython/pywps/commit/7d6b26a2e931df2feca0b7fb24f4d01610825aee
- https://github.com/advisories/GHSA-p9wf-3xpg-c9g5 (Advisory)
- https://github.com/pypa/advisory-database/tree/main/vulns/pywps/PYSEC-2021-121.yaml
Frequently Asked Questions
What is the vulnerability ID of this XXE injection?
The vulnerability ID for this XML external entity (XXE) injection is CVE-2021-39371.
What is the severity of CVE-2021-39371?
The severity of CVE-2021-39371 is high with a CVSS score of 7.5.
How does the XXE injection in PyWPS before 4.4.5 occur?
The XXE injection in PyWPS before 4.4.5 occurs by assigning a path to the entity, allowing the attacker to view files on the application server filesystem.
Is OWSLib 0.24.1 affected by CVE-2021-39371?
Yes, OWSLib 0.24.1 may also be affected by CVE-2021-39371.
How can I fix the XXE injection vulnerability in PyWPS and OWSLib?
To fix the XXE injection vulnerability, update PyWPS to version 4.4.5 or higher, and OWSLib to a version that has addressed this issue.
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