GHSA-5phf-pp7p-vc2r
Using default SSLContext for HTTPS requests in an HTTPS proxy doesn't verify certificate hostname for proxy connection
At a glance
- Published
- Updated
- CVE
- CVE-2021-28363
- Aliases
- PYSEC-2021-59
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CVSS_V4
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Description
### Impact Users who are using an HTTPS proxy to issue HTTPS requests and haven't configured their own SSLContext via `proxy_config`. Only the default SSLContext is impacted. ### Patches [urllib3 >=1.26.4 has the issue resolved](https://github.com/urllib3/urllib3/releases/tag/1.26.4). urllib3<1.26 is not impacted due to not supporting HTTPS requests via HTTPS proxies. ### Workarounds Upgrading is recommended as this is a minor release and not likely to break current usage. Configuring an `SSLContext` with `check_hostname=True` and passing via `proxy_config` instead of relying on the default `SSLContext` ### For more information If you have any questions or comments about this advisory: * Email us at [sethmichaellarson@gmail.com](mailto:sethmichaellarson@gmail.com)
Affected packages
| Package | Versions |
|---|---|
| PyPI · urllib3 | introduced 1.26.0, fixed 1.26.4 |
References
- https://github.com/urllib3/urllib3/security/advisories/GHSA-5phf-pp7p-vc2r WEB
- https://nvd.nist.gov/vuln/detail/CVE-2021-28363 ADVISORY
- https://github.com/urllib3/urllib3/commit/8d65ea1ecf6e2cdc27d42124e587c1b83a3118b0 WEB
- https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2021-59.yaml WEB
- https://github.com/pypa/advisory-db/tree/main/vulns/urllib3/PYSEC-2021-59.yaml WEB
- https://github.com/urllib3/urllib3 PACKAGE
- https://github.com/urllib3/urllib3/blob/main/CHANGES.rst#1264-2021-03-15 WEB
- https://github.com/urllib3/urllib3/commits/main WEB
- https://github.com/urllib3/urllib3/releases/tag/1.26.4 WEB
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S65ZQVZ2ODGB52IC7VJDBUK4M5INCXL WEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4S65ZQVZ2ODGB52IC7VJDBUK4M5INCXL WEB
- https://pypi.org/project/urllib3/1.26.4 WEB
- https://security.gentoo.org/glsa/202107-36 WEB
- https://security.gentoo.org/glsa/202305-02 WEB
- https://security.netapp.com/advisory/ntap-20240621-0007 WEB
- https://www.oracle.com/security-alerts/cpuoct2021.html WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |