lxml_html_clean is a project for HTML cleaning functionalities copied from `lxml.html.clean`. Prior to version 0.4.0, the HTML Parser in lxml does not properly handle context-switching for special HTML tags such as `<svg>`, `<math>` and `<noscript>`. This behavior deviates from how web browsers parse and interpret such tags. Specifically, content in CSS comments is ignored by lxml_html_clean but may be interpreted differently by web browsers, enabling malicious scripts to bypass the cleaning process. This vulnerability could lead to Cross-Site Scripting (XSS) attacks, compromising the security of users relying on lxml_html_clean in default configuration for sanitizing untrusted HTML content. Users employing the HTML cleaner in a security-sensitive context should upgrade to lxml 0.4.0, which addresses this issue. As a temporary mitigation, users can configure lxml_html_clean with the following settings to prevent the exploitation of this vulnerability. Via `remove_tags`, one may specify tags to remove - their content is moved to their parents' tags. Via `kill_tags`, one may specify tags to be removed completely. Via `allow_tags`, one may restrict the set of permissible tags, excluding context-switching tags like `<svg>`, `<math>` and `<noscript>`.
Metrics
Affected Vendors & Products
References
History
Mon, 25 Nov 2024 14:45:00 +0000
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First Time appeared |
Fedoralovespython
Fedoralovespython lxml Html Clean |
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CPEs | cpe:2.3:a:fedoralovespython:lxml_html_clean:*:*:*:*:*:python:*:* | |
Vendors & Products |
Fedoralovespython
Fedoralovespython lxml Html Clean |
Wed, 20 Nov 2024 16:15:00 +0000
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ssvc
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Tue, 19 Nov 2024 21:45:00 +0000
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Description | lxml_html_clean is a project for HTML cleaning functionalities copied from `lxml.html.clean`. Prior to version 0.4.0, the HTML Parser in lxml does not properly handle context-switching for special HTML tags such as `<svg>`, `<math>` and `<noscript>`. This behavior deviates from how web browsers parse and interpret such tags. Specifically, content in CSS comments is ignored by lxml_html_clean but may be interpreted differently by web browsers, enabling malicious scripts to bypass the cleaning process. This vulnerability could lead to Cross-Site Scripting (XSS) attacks, compromising the security of users relying on lxml_html_clean in default configuration for sanitizing untrusted HTML content. Users employing the HTML cleaner in a security-sensitive context should upgrade to lxml 0.4.0, which addresses this issue. As a temporary mitigation, users can configure lxml_html_clean with the following settings to prevent the exploitation of this vulnerability. Via `remove_tags`, one may specify tags to remove - their content is moved to their parents' tags. Via `kill_tags`, one may specify tags to be removed completely. Via `allow_tags`, one may restrict the set of permissible tags, excluding context-switching tags like `<svg>`, `<math>` and `<noscript>`. | |
Title | HTML Cleaner allows crafted scripts in special contexts like svg or math to pass through | |
Weaknesses | CWE-184 CWE-79 CWE-83 |
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References |
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Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2024-11-19T21:27:08.871Z
Updated: 2024-11-20T15:19:10.677Z
Reserved: 2024-11-14T15:05:46.768Z
Link: CVE-2024-52595
Vulnrichment
Updated: 2024-11-20T15:18:53.590Z
NVD
Status : Analyzed
Published: 2024-11-19T22:15:21.120
Modified: 2024-11-25T14:27:38.087
Link: CVE-2024-52595
Redhat
No data.