CVE-2019-10160 Information disclosure in python

Critical 9.8 Published 7 Jun 2019 Updated 14 Oct 2026

Attackers can craft URLs to leak cookies and credentials to wrong hosts due to flawed parsing in Python's urllib.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-10160?

CVE-2019-10160 is a critical vulnerability in Canonical Ubuntu Linux, published on 7 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A security regression of CVE-2019-9636 was discovered in python since commit d537ab0ff9767ef024f26246899728f0116b1ec3 affecting versions 2.7, 3.5, 3.6, 3.7 and from v3.8.0a4 through v3.8.0b1, which still allows an attacker to exploit CVE-2019-9636 by abusing the user and password parts of a URL. When an application parses user-supplied URLs to store cookies, authentication credentials, or other kind of information, it is possible for an attacker to provide specially crafted URLs to make the application locate host-related information (e.g. cookies, authentication data) and send them to a different host than where it should, unlike if the URLs had been correctly parsed. The result of an attack may vary based on the application.

Weakness: CWE-522, CWE-172

Which versions are affected by CVE-2019-10160?

It affects 14 products.

Linux distribution packages (40)

`python` Red Hat:enterprise_linux:7::client	All versions	`0:2.7.5-80.el7_6`
`python-debug` Red Hat:enterprise_linux:7::client	All versions	`0:2.7.5-80.el7_6`
`python-debuginfo` Red Hat:enterprise_linux:7::client	All versions	`0:2.7.5-80.el7_6`
`python-devel` Red Hat:enterprise_linux:7::client	All versions	`0:2.7.5-80.el7_6`
`python-libs` Red Hat:enterprise_linux:7::client	All versions	`0:2.7.5-80.el7_6`
`python-test` Red Hat:enterprise_linux:7::client	All versions	`0:2.7.5-80.el7_6`
`python-tools` Red Hat:enterprise_linux:7::client	All versions	`0:2.7.5-80.el7_6`
`tkinter` Red Hat:enterprise_linux:7::client	All versions	`0:2.7.5-80.el7_6`
`python` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.7.5-80.el7_6`
`python-debug` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.7.5-80.el7_6`
`python-debuginfo` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.7.5-80.el7_6`
`python-devel` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.7.5-80.el7_6`
`python-libs` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.7.5-80.el7_6`
`python-test` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.7.5-80.el7_6`
`python-tools` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.7.5-80.el7_6`
`tkinter` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.7.5-80.el7_6`
`python` Red Hat:enterprise_linux:7::server	All versions	`0:2.7.5-80.el7_6`
`python-debug` Red Hat:enterprise_linux:7::server	All versions	`0:2.7.5-80.el7_6`
`python-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:2.7.5-80.el7_6`
`python-devel` Red Hat:enterprise_linux:7::server	All versions	`0:2.7.5-80.el7_6`
`python-libs` Red Hat:enterprise_linux:7::server	All versions	`0:2.7.5-80.el7_6`
`python-test` Red Hat:enterprise_linux:7::server	All versions	`0:2.7.5-80.el7_6`
`python-tools` Red Hat:enterprise_linux:7::server	All versions	`0:2.7.5-80.el7_6`
`tkinter` Red Hat:enterprise_linux:7::server	All versions	`0:2.7.5-80.el7_6`
`python` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.7.5-80.el7_6`
`python-debug` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.7.5-80.el7_6`
`python-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.7.5-80.el7_6`
`python-devel` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.7.5-80.el7_6`
`python-libs` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.7.5-80.el7_6`
`python-test` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.7.5-80.el7_6`
`python-tools` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.7.5-80.el7_6`
`tkinter` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.7.5-80.el7_6`
`python` SUSE:Linux Enterprise Module for Basesystem 15	All versions	`2.7.14-7.14.2`
`python-base` SUSE:Linux Enterprise Module for Basesystem 15	All versions	`2.7.14-7.14.2`
`python` SUSE:Linux Enterprise Module for Basesystem 15 SP1	All versions	`2.7.14-7.14.2`
`python-base` SUSE:Linux Enterprise Module for Basesystem 15 SP1	All versions	`2.7.14-7.14.2`
`python` SUSE:Linux Enterprise Module for Desktop Applications 15	All versions	`2.7.14-7.14.2`
`python` SUSE:Linux Enterprise Module for Desktop Applications 15 SP1	All versions	`2.7.14-7.14.2`
`python` SUSE:Linux Enterprise Module for Python 2 15 SP1	All versions	`2.7.14-7.14.2`
`python-base` SUSE:Linux Enterprise Module for Python 2 15 SP1	All versions	`2.7.14-7.14.2`

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Netapp Cloud Backup, Netapp Converged Systems Advisor Agent, Opensuse Leap and 8 more.

How do I fix CVE-2019-10160?

Apply the vendor's patch.

Is CVE-2019-10160 being exploited?

There is no known exploitation of CVE-2019-10160 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as CLSA-2021-1616001357, DEBIAN-CVE-2019-10160, GHSA-379v-rm3f-c48g, PSF-2019-3, RHSA-2019:1587, SUSE-SU-2019:2064-1 and 2 more.