High · published December 12, 2017
CVSS calls it high at 8.1. It is confirmed in active exploitation. It sits in the 99.9th percentile for exploit probability.
🚨 Before version 3.6.5, Embedthis GoAhead has a sneaky way to let attackers run code remotely if CGI is enabled — think of it as a trojan horse sneaking in through the back door! 🔥 Imagine a restaurant that allows customers to cook their own meals in the kitchen. If they bring in sneaky ingredients without checks, they could end up creating a dish that poisons everyone! Here, untrusted HTTP parameters are those sneaky ingredients, leading to big problems. An attacker can exploit this vulnerability to execute arbitrary code on the server, potentially leading to a full system compromise. With the ability to POST a malicious shared object payload, they could do anything — from stealing sensitive data to hijacking the server entirely. This is absolutely devastating for any application relying on GoAhead!
Imagine a restaurant that allows customers to cook their own meals in the kitchen. If they bring in sneaky ingredients without checks, they could end up creating a dish that poisons everyone! Here, untrusted HTTP parameters are those sneaky ingredients, leading to big problems. This vulnerability occurs due to the improper initialization of environment variables in forked CGI scripts when CGI is enabled. When combined with the glibc dynamic linker, it allows attackers to leverage specific parameter names like LD_PRELOAD to execute arbitrary code remotely.
An attacker can exploit this vulnerability to execute arbitrary code on the server, potentially leading to a full system compromise. With the ability to POST a malicious shared object payload, they could do anything — from stealing sensitive data to hijacking the server entirely. This is absolutely devastating for any application relying on GoAhead! To protect yourself, update Embedthis GoAhead to version 3.6.5 or later immediately. Additionally, consider disabling CGI if it's not needed, and audit any settings that allow untrusted input to be passed to the environment. Keep your web applications tight! This is fixable! Act now, and you'll have your systems locked down in no time. 🛡️