Amazon Linux 2 Security Advisory: ALAS-2024-2620
Advisory Release Date: 2024-08-01 03:01 Pacific
Advisory Updated Date: 2024-08-13 09:45 Pacific
Severity:
Medium
Issue Overview:
An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3. (CVE-2021-28957)
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.amzn2.0.6.aarch64
python3-lxml-3.2.1-4.amzn2.0.6.aarch64
python-lxml-debuginfo-3.2.1-4.amzn2.0.6.aarch64
i686:
python-lxml-3.2.1-4.amzn2.0.6.i686
python3-lxml-3.2.1-4.amzn2.0.6.i686
python-lxml-debuginfo-3.2.1-4.amzn2.0.6.i686
noarch:
python-lxml-docs-3.2.1-4.amzn2.0.6.noarch
src:
python-lxml-3.2.1-4.amzn2.0.6.src
x86_64:
python-lxml-3.2.1-4.amzn2.0.6.x86_64
python3-lxml-3.2.1-4.amzn2.0.6.x86_64
python-lxml-debuginfo-3.2.1-4.amzn2.0.6.x86_64