CVE - CVE-2021-28363

CVE-ID
CVE-2021-28363	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://github.com/urllib3/urllib3/commit/8d65ea1ecf6e2cdc27d42124e587c1b83a3118b0 URL:https://github.com/urllib3/urllib3/commit/8d65ea1ecf6e2cdc27d42124e587c1b83a3118b0 CONFIRM:https://github.com/urllib3/urllib3/security/advisories/GHSA-5phf-pp7p-vc2r URL:https://github.com/urllib3/urllib3/security/advisories/GHSA-5phf-pp7p-vc2r CONFIRM:https://pypi.org/project/urllib3/1.26.4/ URL:https://pypi.org/project/urllib3/1.26.4/ FEDORA:FEDORA-2021-3f378dda90 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4S65ZQVZ2ODGB52IC7VJDBUK4M5INCXL/ GENTOO:GLSA-202107-36 URL:https://security.gentoo.org/glsa/202107-36 GENTOO:GLSA-202305-02 URL:https://security.gentoo.org/glsa/202305-02 MISC:https://github.com/urllib3/urllib3/commits/main URL:https://github.com/urllib3/urllib3/commits/main MISC:https://www.oracle.com/security-alerts/cpuoct2021.html URL:https://www.oracle.com/security-alerts/cpuoct2021.html
Assigning CNA
MITRE Corporation
Date Record Created
20210313	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20210313)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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