CVE-2016-9015

Name	CVE-2016-9015
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
python-urllib3 (PTS)	buster	1.24.1-1	fixed
	buster (security)	1.24.1-1+deb10u2	fixed
	bullseye	1.26.5-1~exp1	fixed
	bookworm	1.26.12-1	fixed
	sid, trixie	1.26.18-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
python-urllib3	source	(unstable)	(not affected)

- python-urllib3 <not-affected> (Issue only present in 1.17 and 1.18 releases)