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A recent exploit demonstrates how a Denial-of-Service (DoS) vulnerability can be transformed into a privilege escalation attack, affecting multiple major laptop manufacturers including MSI, Lenovo, ASUS, Alienware, and Huawei. The vulnerability, tracked as CVE-2025-26125, has been confirmed, with a full write-up pending patch release.
Read the full article here: hackandhide.com
You Should Know:
1. Understanding the Attack Vector
A DoS flaw in system firmware or driver components can be weaponized to execute arbitrary code with elevated privileges. This often involves:
– Memory corruption (heap overflow, buffer overflow)
– Race conditions in driver operations
– Improper input validation in firmware updates
2. Testing for Similar Vulnerabilities
Use these commands to check for vulnerable drivers or services:
Linux:
<h1>List loaded kernel modules</h1> lsmod <h1>Check for vulnerable driver versions</h1> modinfo <driver_name> <h1>Search for world-writable driver files</h1> find /lib/modules/$(uname -r) -perm -o=w -type f
#### **Windows:**
<h1>List installed drivers</h1> driverquery /v <h1>Check driver file permissions</h1> icacls "C:\Windows\System32\drivers*.sys" <h1>Verify digital signatures</h1> sigcheck -accepteula -u -e C:\Windows\System32\drivers
### **3. Exploitation Techniques**
If a vulnerable driver is found:
- Kernel debugging (
WinDbg/GDB) - Fuzzing (
AFL,Boofuzz) - Shellcode injection via memory corruption
Example **Linux kernel exploit check**:
<h1>Check kernel protections</h1> cat /proc/sys/kernel/randomize_va_space # ASLR status dmesg | grep "NX (Execute Disable) protection: active"
### **4. Mitigation Steps**
- Patch firmware/drivers immediately.
- Restrict driver loading (Linux:
sysctl kernel.modules_disabled=1). - Enable Secure Boot (Windows/Linux).
- Monitor driver behavior (
auditd/ Windows Event Log).
## **What Undercode Say:**
Privilege escalation via DoS is a critical threat, especially when vendors delay patches. Always:
– Audit third-party drivers regularly.
– Use exploit mitigation tools (Grsecurity, SELinux, AppArmor).
– Test systems with Kernel exploit checkers like Linux Exploit Suggester.
Example hardening command (Linux):
<h1>Disable vulnerable syscalls</h1> echo 1 > /proc/sys/kernel/kptr_restrict echo 2 > /proc/sys/kernel/perf_event_paranoid
Windows mitigation:
<h1>Enable LSA Protection</h1> Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa" -Name "RunAsPPL" -Value 1
## **Expected Output:**
A secured system with:
- No unpatched drivers
- Kernel protections active
- Restricted driver permissions
- Logging enabled for suspicious activity
For further reading: MITRE ATT&CK – Privilege Escalation
References:
Reported By: Anashadane Cve – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
