Cross-site Scripting (XSS) Affecting python39-pyyaml package, versions <0:5.4.1-1.module+el8.5.0+20364+c7fe1181

Q: How to fix?

<p>Upgrade <code>Oracle:8</code> <code>python39-pyyaml</code> to version 0:5.4.1-1.module+el8.5.0+20364+c7fe1181 or higher.<br>This issue was patched in <code>ELSA-2021-4160</code>.</p>

Threat Intelligence

0.23% (62^nd percentile)

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Snyk ID SNYK-ORACLE8-PYTHON39PYYAML-2592725
published 10 Apr 2022
disclosed 21 Mar 2021

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Introduced: 21 Mar 2021

CVE-2021-28957 Open this link in a new tab CWE-79 Open this link in a new tab

How to fix?

Upgrade Oracle:8 python39-pyyaml to version 0:5.4.1-1.module+el8.5.0+20364+c7fe1181 or higher.
This issue was patched in ELSA-2021-4160.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39-pyyaml package and not the python39-pyyaml package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Network
Attack Complexity (AC)

Low
Privileges Required (PR)

None
User Interaction (UI)

Required

Scope (S)

Changed

Confidentiality (C)

Low
Integrity (I)

Low
Availability (A)

None

Cross-site Scripting (XSS) Affecting python39-pyyaml package, versions <0:5.4.1-1.module+el8.5.0+20364+c7fe1181

Severity

Based on Oracle Linux security rating