CVE-2017-1000363 Memory corruption in n/a
An out-of-bounds write in the Linux kernel parallel port driver allows local attackers with bootloader control to execute arbitrary code or escalate 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
- Available
What is CVE-2017-1000363?
CVE-2017-1000363 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 13 Jul 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Linux drivers/char/lp.c Out-of-Bounds Write. Due to a missing bounds check, and the fact that parport_ptr integer is static, a 'secure boot' kernel command line adversary (can happen due to bootloader vulns, e.g. Google Nexus 6's CVE-2016-10277, where due to a vulnerability the adversary has partial control over the command line) can overflow the parport_nr array in the following code, by appending many (>LP_NO) 'lp=none' arguments to the command line.
Weakness: CWE-787
Which versions are affected by CVE-2017-1000363?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2017-1000363?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-1000363 being exploited?
There is no known exploitation of CVE-2017-1000363 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2017-1000363, GHSA-jg85-fhqf-2gfw, UBUNTU-CVE-2017-1000363.