CVE-2021-42342

An issue was discovered in GoAhead 4.x and 5.x before 5.1.5

published October 14, 2021

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.1th percentile for exploit probability.

CVSS
—
EPSS
59%
Percentile
99.1
In the wild
Unconfirmed
What it is

⚠️ A misplaced prefix is all it takes to unleash chaos! In GoAhead versions 4.x and 5.x (before 5.1.5), untrusted user inputs can slip through to CGI scripts, like a sneaky delivery that bypasses the front desk. 🤯 Think of it like a restaurant where customers can modify their orders without the kitchen verifying the changes. If a customer asks for extra toppings without following the usual procedure, they could end up serving something completely off-menu! This vulnerability allows attackers to inject untrusted environment variables into CGI scripts, potentially leading to unauthorized access or data leaks. Imagine an unauthorized diner altering kitchen orders to serve themselves the chef's special — it could lead to a complete kitchen disaster!

Put simply

Think of it like a restaurant where customers can modify their orders without the kitchen verifying the changes. If a customer asks for extra toppings without following the usual procedure, they could end up serving something completely off-menu! In GoAhead's file upload filter, user form variables can be passed directly to CGI scripts without the necessary CGI prefix. This oversight creates a pathway for attackers to inject malicious environmental data into the application.

What to do

This vulnerability allows attackers to inject untrusted environment variables into CGI scripts, potentially leading to unauthorized access or data leaks. Imagine an unauthorized diner altering kitchen orders to serve themselves the chef's special — it could lead to a complete kitchen disaster! To secure your systems, update GoAhead to version 5.1.5 or higher immediately. Additionally, review and sanitize any user inputs to ensure they adhere to expected formats before processing. You've got this! Just patch your systems, and you'll be a security hero in no time! 🦸

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.59460 · 99.1th percentile
Published
2021-10-14T05:08Z
EPSS history
Timeline
  • 14 OCT 05:08Z
    An issue was discovered in GoAhead 4.x and 5.x before 5.1.5
    cvelistv5