CVE search · CVE-2021-28363
CVE-2021-28363
medium 6.5
The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given via proxy_config) doesn't verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.
Details
- Status
- Modified
- Published
- Last changed
- Source
- cve@mitre.org
- Weakness
- CWE-295
Severity
| Version | Score | Vector | Source |
|---|---|---|---|
| CVSS 3.1 | medium 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
nvd@nist.govPrimary |
| CVSS 2.0 | medium 6.4 | AV:N/AC:L/Au:N/C:P/I:P/A:N |
nvd@nist.govPrimary |
Affected products
Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.
- python · urllib3
- fedoraproject · fedora
- oracle · peoplesoft_enterprise_peopletools
References
- https://github.com/urllib3/urllib3/commit/8d65ea1ecf6e2cdc27d42124e587c1b83a3118b0PatchThird Party Advisory
- https://github.com/urllib3/urllib3/commits/mainPatchThird Party Advisory
- https://github.com/urllib3/urllib3/security/advisories/GHSA-5phf-pp7p-vc2rMitigationThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S65ZQVZ2ODGB52IC7VJDBUK4M5INCXL/
- https://pypi.org/project/urllib3/1.26.4/Third Party Advisory
- https://security.gentoo.org/glsa/202107-36Third Party Advisory
- https://security.gentoo.org/glsa/202305-02
- https://security.netapp.com/advisory/ntap-20240621-0007/
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
- https://github.com/urllib3/urllib3/commit/8d65ea1ecf6e2cdc27d42124e587c1b83a3118b0PatchThird Party Advisory
- https://github.com/urllib3/urllib3/commits/mainPatchThird Party Advisory
- https://github.com/urllib3/urllib3/security/advisories/GHSA-5phf-pp7p-vc2rMitigationThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S65ZQVZ2ODGB52IC7VJDBUK4M5INCXL/
- https://pypi.org/project/urllib3/1.26.4/Third Party Advisory
- https://security.gentoo.org/glsa/202107-36Third Party Advisory
- https://security.gentoo.org/glsa/202305-02
- https://security.netapp.com/advisory/ntap-20240621-0007/
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html