Description
An issue was discovered in GoAhead 4.x and 5.x before 5.1.5. In the file upload filter, user form variables can be passed to CGI scripts without being prefixed with the CGI prefix. This permits tunneling untrusted environment variables into vulnerable CGI scripts.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 2 repositories
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Mr-xn/CVE-2021-42342 ★ 41 · Jan 4, 2022
CVE-2021-42342 RCE
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kimusan/goahead-webserver-pre-5.1.5-RCE-PoC-CVE-2021-42342- ★ 23 · Oct 12, 2021
A small PoC for the recent RCE found in the Goahead Webserver prior to version 5.1.5.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.