CVE-2021-28363

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Summary

CVECVE-2021-28363
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-15 18:15:00 UTC
Updated2023-11-07 03:32:00 UTC
DescriptionThe 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.

Risk And Classification

Problem Types: CWE-295

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 34 All All All
Application Oracle Peoplesoft Enterprise Peopletools 8.59 All All All
Application Python Urllib3 All All All All

References

ReferenceSourceLinkTags
urllib3 · PyPI CONFIRM pypi.org
Using default SSLContext for HTTPS requests in an HTTPS proxy doesn't verify certificate hostname for proxy connection · Advisory · urllib3/urllib3 · GitHub CONFIRM github.com
Merge pull request from GHSA-5phf-pp7p-vc2r · urllib3/urllib3@8d65ea1 · GitHub CONFIRM github.com
[SECURITY] Fedora 34 Update: python-pip-21.0.1-3.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 34 Update: python-pip-21.0.1-3.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
urllib3: Multiple vulnerabilities (GLSA 202107-36) — Gentoo security GENTOO security.gentoo.org
Oracle Critical Patch Update Advisory - October 2021 MISC www.oracle.com
Python, PyPy3: Multiple Vulnerabilities (GLSA 202305-02) — Gentoo security GENTOO security.gentoo.org
Commits · urllib3/urllib3 · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 179631 Debian Security Update for python-urllib3 (CVE-2021-28363)
  • 281095 Fedora Security Update for python (FEDORA-2021-3f378dda90)
  • 352387 Amazon Linux Security Advisory for python-pip: ALAS2-2021-1667
  • 353121 Amazon Linux Security Advisory for python-pip : ALAS2-2022-1742
  • 375970 Oracle PeopleSoft Enterprise PeopleTools Product Multiple Vulnerabilities (CPUOCT2021)
  • 501771 Alpine Linux Security Update for py3-urllib3
  • 504335 Alpine Linux Security Update for py3-urllib3
  • 710032 Gentoo Linux urllib3 Multiple vulnerabilities (GLSA 202107-36)
  • 710714 Gentoo Linux Python, PyPy3 Multiple Vulnerabilities (GLSA 202305-02)
  • 980343 Python (pip) Security Update for urllib3 (GHSA-5phf-pp7p-vc2r)
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