CVE-2016-9015 Information

Description

Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them in certain configurations to not correctly validate TLS certificates. This places users of the library with those configurations at risk of man-in-the-middle and information leakage attacks. This vulnerability affects users using versions 1.17 and 1.18 of the urllib3 library who are using the optional PyOpenSSL support for TLS instead of the regular standard library TLS backend and who are using OpenSSL 1.1.0 via PyOpenSSL. This is an extremely uncommon configuration so the security impact of this vulnerability is low.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Reference

http://www.openwall.com/lists/oss-security/2016/10/27/6 [oss-security] 20161027 CVE-2016-9015: Python urllib3 1.17 and 1.18 certificate verification failure http://www.securityfocus.com/bid/93941 Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them in certain configurations to not correctly validate TLS certificates. This places users of the library with those configurations at risk of man-in-the-middle and information leakage attacks. This vulnerability affects users using versions 1.17 and 1.18 of the urllib3 library who are using the optional PyOpenSSL support for TLS instead of the regular standard library TLS backend and who are using OpenSSL 1.1.0 via PyOpenSSL. This is an extremely uncommon configuration so the security impact of this vulnerability is low. cpe:2.3:a:python:urllib3:1.17:::::::* cpe:2.3:a:python:urllib3:1.18:::::::*

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

3.7