Improper Certificate Validation in urllib3 Library Affecting Python Applications
CVE-2019-11324

7.5HIGH

Key Information:

Vendor
Python
Status
Urllib3
Vendor
CVE Published:
18 April 2019

Summary

The urllib3 library versions prior to 1.24.2 for Python exhibit issues in how CA certificates are managed, specifically when the expected CA certificates differ from those stored in the operating system. This flaw can lead to situations where SSL connections fail to verify correctly, potentially allowing untrusted connections to succeed. The problem lies with the improper handling of parameters related to ssl_context and CA certificate settings, which could undermine the security of applications relying on this library.

References

https://github.com/urllib3/urllib3/compare/a6ec68a...1efadf4
x_refsource_MISC
http://www.openwall.com/lists/oss-security/2019/04/19/1
mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3990-1/
vendor-advisoryx_refsource_UBUNTU

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.