(DedeCMS security flaws cause malicious scripts to be uploaded to the website. Intruders/intruders can use malicious scripts to send a large number of data packets, seriously occupying CPU resources and server bandwidth. Such attacks usually have a traffic volume of tens or even nearly a hundred M. Hackers took advantage of user website vulnerabilities and uploaded the latest d/dos attack Trojan program written in PHP. This attack program uses the UDP protocol, and the bandwidth consumption is very alarming. The impact is very high, run the following patch for server technology to manage this issue. Are there any malicious script files found, etc.? Most of the uploaded scripts are collected in the three directories of plus, data, and data/cache. Please carefully check whether there are recently uploaded files in the three directories. ?For more information about this security vulnerability and manual repair methods, please refer to the official instructions of DedeCMS 1. Download udp.rar2. After decompression, double-click udp.bat to automatically create security rules. To check whether the security rule is created successfully, you can click Start-Programs-Administrative Tools-Local Security Policy-IP Security Policy, if there is "DropUDP", it means the security policy was created successfully, if you are a Linux host, please use iptables Create relevant rules. This document includes the following attachments:
udp\udpdeny\chgdns.vbs
udp\udpdeny\udp.bat
udp\udpdeny\udp.ipsec)
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