Improper Input Validation Affecting python2.7 package, versions <2.7.13-2+deb9u4



    Attack Complexity Low
Expand this section
5.3 medium
Expand this section
5.3 medium
Expand this section
Red Hat
5.3 medium

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-DEBIAN9-PYTHON27-453437
  • published 24 Jul 2019
  • disclosed 13 Jul 2019

How to fix?

Upgrade Debian:9 python2.7 to version 2.7.13-2+deb9u4 or higher.

NVD Description

Note: Versions mentioned in the description apply to the upstream python2.7 package. See How to fix? for Debian:9 relevant versions.

http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/ in Python before 3.7.3 does not correctly validate the domain: it can be tricked into sending existing cookies to the wrong server. An attacker may abuse this flaw by using a server with a hostname that has another valid hostname as a suffix (e.g., to steal cookies for When a program uses http.cookiejar.DefaultPolicy and tries to do an HTTP connection to an attacker-controlled server, existing cookies can be leaked to the attacker. This affects 2.x through 2.7.16, 3.x before 3.4.10, 3.5.x before 3.5.7, 3.6.x before 3.6.9, and 3.7.x before 3.7.3.