Medium: python-lxml

Issue Overview:

A Cross-site Scripting (XSS) vulnerability was found in the python-lxml’s clean module. The module’s parser did not properly imitate browsers, causing different behaviors between the sanitizer and the user’s page. This flaw allows a remote attacker to run arbitrary HTML/JS code. The highest threat from this vulnerability is to confidentiality and integrity. (CVE-2020-27783)

Affected Packages:

python-lxml

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update python-lxml to update your system.

New Packages:

aarch64:  
    python-lxml-3.2.1-4.amzn2.0.3.aarch64  
    python-lxml-debuginfo-3.2.1-4.amzn2.0.3.aarch64  
  
i686:  
    python-lxml-3.2.1-4.amzn2.0.3.i686  
    python-lxml-debuginfo-3.2.1-4.amzn2.0.3.i686  
  
noarch:  
    python-lxml-docs-3.2.1-4.amzn2.0.3.noarch  
  
src:  
    python-lxml-3.2.1-4.amzn2.0.3.src  
  
x86_64:  
    python-lxml-3.2.1-4.amzn2.0.3.x86_64  
    python-lxml-debuginfo-3.2.1-4.amzn2.0.3.x86_64  

Additional References

Red Hat: CVE-2020-27783

Mitre: CVE-2020-27783