high8.2
CVE-2023-27476
OWSLib vulnerable to XML External Entity (XXE) Injection
Impact
### Impact OWSLib's XML parser (which supports both `lxml` and `xml.etree`) does not disable entity resolution for `lxml`, and could lead to arbitrary file reads from an attacker-controlled XML payload. This affects all XML parsing in the codebase. ### Patches - Use only lxml for XML handling, adding `resolve_entities=False` to `lxml`'s parser: https://github.com/geopython/OWSLib/pull/863 ### Workarounds ```python patch_well_known_namespaces(etree) etree.set_default_parser( parser=etree.XMLParser(resolve_entities=False) ) ``` ### References - [`GHSL-2022-131`](https://securitylab.github.com/advisories/GHSL-2022-131_OWSLib/)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | OWSLib | < 0.28.1 | 0.28.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Osgeo | Owslib | before 0.28.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/geopython/OWSLib/pull/863/commits/b92687702be9576c0681bb11cad21eb631b9122f
- https://github.com/geopython/OWSLib/security/advisories/GHSA-8h9c-r582-mggc
- https://lists.debian.org/debian-lts-announce/2023/06/msg00032.html
- https://securitylab.github.com/advisories/GHSL-2022-131_owslib/
- https://www.debian.org/security/2023/dsa-5426
- https://github.com/advisories/GHSA-8h9c-r582-mggc
- https://github.com/geopython/OWSLib/pull/863
- https://github.com/geopython/OWSLib/releases/tag/0.28.1
- https://nvd.nist.gov/vuln/detail/CVE-2023-27476
- https://github.com/pypa/advisory-database/tree/main/vulns/owslib/PYSEC-2023-86.yaml
- https://securitylab.github.com/advisories/GHSL-2022-131_owslib