CVE-2017-1086 Information disclosure in FreeBSD
A local attacker with debugger access can read uninitialized kernel stack memory via ptrace, potentially exposing sensitive kernel data.
- 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-2017-1086?
CVE-2017-1086 is a low-severity vulnerability in Freebsd Freebsd, published on 16 Nov 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p4, 11.0-RELEASE-p15, 10.4-STABLE, 10.4-RELEASE-p3, and 10.3-RELEASE-p24, not all information in the struct ptrace_lwpinfo is relevant for the state of any thread, and the kernel does not fill the irrelevant bytes or short strings. Since the structure filled by the kernel is allocated on the kernel stack and copied to userspace, a leak of information of the kernel stack of the thread is possible from the debugger. As a result, some bytes from the kernel stack of the thread using ptrace (PT_LWPINFO) call can be observed in userspace.
Weakness: CWE-200
Which versions are affected by CVE-2017-1086?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2017-1086?
No fix has been published for CVE-2017-1086 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-1086 being exploited?
There is no known exploitation of CVE-2017-1086 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-hh28-cq4w-7g55.