CVE-2018-6856 Privilege escalation in n/a
Local attackers can escalate privileges to SYSTEM by exploiting an IOCTL vulnerability in Sophos SafeGuard products to modify security descriptors.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-6856?
CVE-2018-6856 is a high-severity vulnerability in n/a, published on 9 Jul 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Sophos SafeGuard Enterprise before 8.00.5, SafeGuard Easy before 7.00.3, and SafeGuard LAN Crypt before 3.95.2 are vulnerable to Local Privilege Escalation via IOCTL 0x8020601C. By crafting an input buffer we can control the execution path to the point where a global variable will be written to a user controlled address. We can take advantage of this condition to zero-out the pointer to the security descriptor in the object header of a privileged process or modify the security descriptor itself and run code in the context of a process running as SYSTEM.
Weakness: CWE-119
Which versions are affected by CVE-2018-6856?
It affects 3 products.
Products include Sophos Safeguard Easy Device Encryption Client, Sophos Safeguard Enterprise Client, Sophos Safeguard Lan Crypt Client.
How do I fix CVE-2018-6856?
No fix has been published for CVE-2018-6856 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-6856 being exploited?
There is no known exploitation of CVE-2018-6856 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-72gh-hv4m-2438.