CVE-2021-48016
CVE-2021-48016 · DedeCMS 5.8.1-beta Unauthenticated RCE via plus/flink.php
This page contains facts from public vulnerability sources. Check the original advisory before updating.
DedeCMS through 5.8.1-beta contains a PHP code injection vulnerability in ShowMsg() where the HTTP Referer header is written into a DedeTemplate string and included. Unauthenticated attackers can send a crafted Referer to /plus/flink.php?dopost=save with an empty validate code to execute arbitrary PHP and system commands. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.
CVSS 9.3 · Critical · EPSS 0.4%
- Published
- Updated
Affected products and versions
dedecms
- Versions
- ≥ 0, ≤ 5.8.1-beta: Affected (custom)
No fix published
Original sources
- https://srcincite.io/blog/2021/09/30/chasing-a-dream-pwning-the-biggest-cms-in-china.html
- https://github.com/dedecms/DedeCMS/blob/v5.8.1/include/common.func.php
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/dedecms/dedecms-rce.yaml
- https://www.vulncheck.com/advisories/dedecms-5.8.1-beta-unauthenticated-rce-via-plus-flink-php
- https://nvd.nist.gov/vuln/detail/CVE-2021-48016