RHSA-2021:4158: Moderate: python-lxml security update
First published: Tue Nov 09 2021(Updated: )
lxml is an XML processing library providing access to libxml2 and libxslt libraries using the Python ElementTree API. <br>Security Fix(es):<br><li> python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS (CVE-2021-28957)</li> For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.<br>Additional Changes:<br>For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/python-lxml | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python-lxml-debugsource | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python3-lxml | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python3-lxml-debuginfo | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python-lxml-debugsource | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python3-lxml | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python3-lxml-debuginfo | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python-lxml-debugsource | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python3-lxml | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python3-lxml-debuginfo | <4.2.3-3.el8 | 4.2.3-3.el8 |
| redhat/python-lxml-debugsource | <4.2.3-3.el8.aa | 4.2.3-3.el8.aa |
| redhat/python3-lxml | <4.2.3-3.el8.aa | 4.2.3-3.el8.aa |
| redhat/python3-lxml-debuginfo | <4.2.3-3.el8.aa | 4.2.3-3.el8.aa |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2021:4158?
The severity of RHSA-2021:4158 is classified as moderate.
How do I fix RHSA-2021:4158?
To fix RHSA-2021:4158, update the python-lxml package to version 4.2.3-3.el8 or later.
What type of vulnerability is addressed in RHSA-2021:4158?
RHSA-2021:4158 addresses a missing input sanitization vulnerability that could lead to XSS attacks.
Which software versions are affected by RHSA-2021:4158?
The affected software versions include python-lxml prior to 4.2.3-3.el8, including its debug and debug source packages.
What package is recommended to mitigate the issue in RHSA-2021:4158?
The recommended package to mitigate the issue in RHSA-2021:4158 is python-lxml version 4.2.3-3.el8.
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