CVE-2024-47765: minecraft motd XSS — Fix

Description

Minecraft MOTD Parser is a PHP library to parse minecraft server motd. The HtmlGenerator class is subject to potential cross-site scripting (XSS) attack through a parsed malformed Minecraft server MOTD. The HtmlGenerator iterates through objects of MotdItem that are contained in an object of MotdItemCollection to generate a HTML string. An attacker can make malicious inputs to the color and text properties of MotdItem to inject own HTML into a web page during web page generation. For example by sending a malicious MOTD from a Minecraft server under their control that was queried and passed to the HtmlGenerator. This XSS vulnerability exists because the values of these properties are neither filtered nor escaped. This vulnerability is fixed in 1.0.6.

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CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

CWE-80 CWE-80

Affected Products

Vendor	Product	Versions
jgniecki	minecraft_motd_parser	< 1.0.6

References

Advisories & Patches

https://github.com/jgniecki/MinecraftMotdParser/commit/b0ab9d68a964cd3d74977f39a9e7af0a94509f7c https://github.com/jgniecki/MinecraftMotdParser/security/advisories/GHSA-q898-frwq-f3qp

Frequently Asked Questions

What is CVE-2024-47765? +

Minecraft MOTD Parser is a PHP library to parse minecraft server motd. The HtmlGenerator class is subject to potential cross-site scripting (XSS) attack through a parsed malformed Minecraft server MOTD. The HtmlGenerator iterates through objects of MotdItem that are contained in an object of MotdItemCollection to generate a HTML string. An attacker can make malicious inputs to the color and text properties of MotdItem to inject own HTML into a web page during web page generation. For example by sending a malicious MOTD from a Minecraft server under their control that was queried and passed to the HtmlGenerator. This XSS vulnerability exists because the values of these properties are neither filtered nor escaped. This vulnerability is fixed in 1.0.6. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-47765? +

CVE-2024-47765 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-47765? +

CVE-2024-47765 affects products from jgniecki, specifically: minecraft_motd_parser. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-47765? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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