This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of software utilizing VX Search Web Server. The vulnerability is caused due to a boundary error within VX Search Web Server when processing HTTP command name POST Request. This can be exploited to cause a stack-based buffer overflow via an overly long, specially-crafted argument passed to the affected command. Authentication is not required to exploit this vulnerability.
Embedthis GoAhead before 3.6.5 and after 2.5.0 allows remote code execution if CGI is enabled and a CGI program is dynamically linked. This is a result of initializing the environment of forked CGI scripts using untrusted HTTP request parameters in the cgiHandler function in cgi.c. When combined with the glibc dynamic linker, this behaviour can be abused for remote code execution using special parameter names such as LD_PRELOAD. An attacker can POST their shared object payload in the body of the request, and reference it using /proc/self/fd/0.