CVE-2016-9015 Urllib3 Incorrect Certificate Validation
LowCVSS 3.7
EPSS 0.75%
- Published
- Updated
- Exploit status
- No public exploit known
Description
Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them, in certain configurations, to not correctly validate TLS certificates. This places users of the library with those configurations at risk of man-in-the-middle and information leakage attacks. This vulnerability affects users using versions 1.17 and 1.18 of the urllib3 library, who are using the optional PyOpenSSL support for TLS instead of the regular standard library TLS backend, and who are using OpenSSL 1.1.0 via PyOpenSSL. This is an extremely uncommon configuration, so the security impact of this vulnerability is low.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pypi urllib3(PyPI) | >= 1.17, < 1.18.1 | 1.18.1 |
| pypi urllib3(PyPI) | = 1.17 | No fix listed |
| pypi urllib3(PyPI) | = 1.18 | No fix listed |
| pypi urllib3(PyPI) | >= 1.17, <= 1.18 | No fix listed |
| python urllib3 | = 1.17 | No fix listed |
| python urllib3 | = 1.18 | No fix listed |
References
- nvd.nist.gov third-party-advisory vendor-advisory
- github.com patch
- github.com
- github.com product
- web.archive.org
- [oss-security] 20161027 CVE-2016-9015: Python urllib3 1.17 and 1.18 certificate verification failure mailing-list mitigation
- 93941 third-party-advisory vdb-entry
- github.com vendor-advisory
- Debian Security Tracker CVE-2016-9015 vendor-advisory