CVE-2018-6855 Privilege escalation in n/a
Local attackers can escalate privileges to SYSTEM by exploiting an IOCTL vulnerability in Sophos SafeGuard products to modify token privileges.
- 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-2018-6855?
CVE-2018-6855 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 0x80202014. By crafting an input buffer we can control the execution path to the point where the constant 0xFFFFFFF will be written to a user-controlled address. We can take advantage of this condition to modify the SEP_TOKEN_PRIVILEGES structure of the Token object belonging to the exploit process and grant SE_DEBUG_NAME privilege. This allows the exploit process to interact with higher privileged processes running as SYSTEM and execute code in their security context.
Weakness: CWE-119
Which versions are affected by CVE-2018-6855?
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-2018-6855?
No fix has been published for CVE-2018-6855 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-6855 being exploited?
There is no known exploitation of CVE-2018-6855 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cqrm-4g9f-vx78.