XXE in Osgeo Owslib
CVE-2021-39371
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.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Osgeo Owslib — versions 0.24.1
- Osgeo Pywps
- Debian Linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/geopython/pywps/pull/616 (Patch, Third Party Advisory)
- github.com/geopython/OWSLib/issues/790 (Patch, Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2021/09/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-39371?
- CVE-2021-39371 is a high-severity vulnerability in Osgeo Owslib, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2021-08-23.
- How severe is CVE-2021-39371?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-39371 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.