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Improper Input Validation Affecting python-base package, versions <2.7.14-7.17.1

Severity

 Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.46% (76th percentile)

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  • Snyk IDSNYK-SLES151-PYTHONBASE-2738744
  • published14 Apr 2022
  • disclosed12 Aug 2019
Report a new vulnerability Found a mistake?

Introduced: 12 Aug 2019

CVE-2018-20852  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 python-base to version 2.7.14-7.17.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-base package and not the python-base package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py 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., pythonicexample.com to steal cookies for example.com). 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.

References