CVE-2017-12840 Memory corruption in n/a
A heap-based buffer overflow in the DESLock+ kernel driver allows local attackers to execute arbitrary code with kernel 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-2017-12840?
CVE-2017-12840 is a high-severity memory corruption vulnerability in n/a, published on 28 Aug 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A kernel driver, namely DLMFENC.sys, bundled with the DESLock+ client application 4.8.16 and earlier contains a locally exploitable heap based buffer overflow in the handling of an IOCTL message of type 0x0FA4204. The vulnerability is present due to the kernel driver failing to allocate sufficient memory on the kernel heap to contain a user supplied string as such the string is copied into a buffer of constant size (0x1000-bytes) and thus an overflow condition results. Access to the kernel driver is permitted through an obfuscated interface whereby bytes of user supplied message are "authenticated" via an obfuscation routine employing a linear equation.
Weakness: CWE-119
Which versions are affected by CVE-2017-12840?
It affects 1 product.
Products include Deslock Deslock\+.
How do I fix CVE-2017-12840?
No fix has been published for CVE-2017-12840 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-12840 being exploited?
There is no known exploitation of CVE-2017-12840 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-mg9q-jqwm-6q5m.