matthiask html-sanitizer up to 2.4.1 Unicode cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in matthiask html-sanitizer up to 2.4.1. Affected is an unknown function of the component Unicode Handler. This manipulation causes cross site scripting. This vulnerability is registered as CVE-2024-34078. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in matthiask html-sanitizer up to 2.4.1. It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component Unicode Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

html-sanitizer is an allowlist-based HTML cleaner. If using `keep_typographic_whitespace=False` (which is the default), the sanitizer normalizes unicode to the NFKC form at the end. Some unicode characters normalize to chevrons; this allows specially crafted HTML to escape sanitization. The problem has been fixed in 2.4.2.

The advisory is shared at github.com. This vulnerability is known as CVE-2024-34078 since 04/30/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 2.4.2 eliminates this vulnerability. Applying the patch 48db42fc5143d0140c32d929c46b802f96913550 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: html-sanitizer 2.4.2
Patch: 48db42fc5143d0140c32d929c46b802f96913550

Timelineinfo

04/30/2024 🔍
05/06/2024 +6 days 🔍
05/06/2024 +0 days 🔍
04/01/2025 +330 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-wvhx-q427-fgh3
Status: Confirmed

CVE: CVE-2024-34078 (🔍)
GCVE (CVE): GCVE-0-2024-34078
GCVE (VulDB): GCVE-100-263185

Entryinfo

Created: 05/06/2024 17:33
Updated: 04/01/2025 02:08
Changes: 05/06/2024 17:33 (67), 04/01/2025 02:08 (4)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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