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Improper Input Validation Affecting python27:2.7/python2-virtualenv package, versions <0:15.1.0-19.module+el8.1.0+3507+d69c168d

Severity

 Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
3.88% (90th percentile)

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  • Snyk IDSNYK-RHEL8-PYTHON27-3685149
  • published26 Jul 2021
  • disclosed31 Oct 2018
Report a new vulnerability Found a mistake?

Introduced: 31 Oct 2018

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

How to fix?

Upgrade RHEL:8 python27:2.7/python2-virtualenv to version 0:15.1.0-19.module+el8.1.0+3507+d69c168d or higher.
This issue was patched in RHSA-2020:1605.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python27:2.7/python2-virtualenv package and not the python27:2.7/python2-virtualenv package as distributed by RHEL. See How to fix? for RHEL:8 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