Cross-site Scripting (XSS) Affecting python27-lxml package, versions <0:3.2.1-4.10.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
3.98% (90th percentile)

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  • Snyk IDSNYK-AMZN201803-PYTHON27LXML-3369609
  • published23 Mar 2023
  • disclosed3 Dec 2020

Introduced: 3 Dec 2020

CVE-2020-27783  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 python27-lxml to version 0:3.2.1-4.10.amzn1 or higher.
This issue was patched in ALAS-2023-1709.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python27-lxml package and not the python27-lxml package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

CVSS Base Scores

version 3.1