PyPi: Urllib3

CVE-2016-9015

Safety vulnerability ID: 35691

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Jan 11, 2017 Updated at Dec 10, 2024
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Advisory

Urllib3 version 1.18.1 includes a fix for CVE-2016-9015: 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.
https://www.openwall.com/lists/oss-security/2016/10/27/6

Affected package

urllib3

Latest version: 2.2.3

HTTP library with thread-safe connection pooling, file post, and more.

Affected versions

Fixed versions

Vulnerability changelog

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.


MLIST:[oss-security] 20161027 CVE-2016-9015: Python urllib3 1.17 and 1.18 certificate verification failure: http://www.openwall.com/lists/oss-security/2016/10/27/6
BID:93941: http://www.securityfocus.com/bid/93941

Resources

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Severity Details

CVSS Base Score

LOW 3.7

CVSS v3 Details

LOW 3.7
Attack Vector (AV)
NETWORK
Attack Complexity (AC)
HIGH
Privileges Required (PR)
NONE
User Interaction (UI)
NONE
Scope (S)
UNCHANGED
Confidentiality Impact (C)
LOW
Integrity Impact (I)
NONE
Availability Availability (A)
NONE

CVSS v2 Details

LOW 2.6
Access Vector (AV)
NETWORK
Access Complexity (AC)
HIGH
Authentication (Au)
NONE
Confidentiality Impact (C)
PARTIAL
Integrity Impact (I)
NONE
Availability Impact (A)
NONE