Exploit for CVE-2024-48990 - Privilege Escalation in Needrestart 3.7-3. For eductional purposes only# CVE-2024-48990 - Needrestart 3.7-3 Privilege Escalation Exploit
## Overview
This repository contains an exploit for CVE-2024-48990, a privilege escalation vulnerability in Needrestart 3.7-3. The exploit leverages improper input handling to execute arbitrary code with elevated privileges.
## Affected Versions
- Needrestart 3.7-3 (Tested on Debian-based systems)
- Other versions may also be vulnerable
## Exploit Details
The exploit consists of:
- `main.asm`: Assembly shellcode used for privilege escalation.
- `listener.sh`: Python-based listener for monitoring exploitation success.
- `Makefile`: Automates the compilation and execution of the exploit.
## Exploitation Steps
### 1. Clone the Repository
```bash
git clone https://github.com/ten-ops/CVE-2024-48990.git
cd CVE-2024-48990
```
### 2. Compile and Execute
```bash
make
```
This will:
- Assemble and link the shellcode.
- Create a malicious shared object (`__init__.so`) inside `/tmp/attacker/importlib/`.
- Execute the `listener.sh` script to monitor the attack.
### 3. Trigger the Exploit
To trigger the exploit, execute the following command:
```bash
sudo needrestart -r a
```
This forces Needrestart to load the malicious shared object, resulting in privilege escalation.
### 4. Verify Exploitation Success
If successful, you should see:
```bash
Root obtained!, clear traces ...
```
---
## Why This Attack is Effective on Multi-User Ubuntu Servers
**1. Needrestart is often executed by administrators when updating or patching the server.**
**2. If the attacker injects the payload before an admin runs needrestart, they gain root without direct sudo access.**
**3. This is known as "privilege escalation by waiting" (time-of-use attack).**
---
## Mitigation
To mitigate this vulnerability:
- **Upgrade Needrestart** to the latest patched version.
- **Restrict execution of untrusted binaries** by enforcing strict sudo policies.
- **Monitor `/tmp/` and `/var/tmp/`** for suspicious activity.
---
## Disclaimer
This exploit is for **educational and research purposes only**. Unauthorized use may violate applicable laws. The author is not responsible for any misuse.
---
## References
- [CVE Details](https://www.cvedetails.com/cve/CVE-2024-48990/)
- [Mitre](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-48990)
---
### **SEO Optimization Tags:**
**CVE-2024-48990, Needrestart Exploit, Linux Privilege Escalation, Needrestart 3.7-3 Vulnerability, Linux Security, Ethical Hacking, Red Teaming, Root Exploit, Assembly Exploit, Cybersecurity Research**
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