CVE-2017-9527 Use after free in n/a
Attackers can cause a denial of service or potentially execute code via a crafted Ruby file due to a use-after-free vulnerability in the mruby garbage collector.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2017-9527?
CVE-2017-9527 is a high-severity use after free vulnerability in Debian Debian Linux, published on 11 Jun 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial of service (heap-based use-after-free and application crash) or possibly have unspecified other impact via a crafted .rb file.
Weakness: CWE-416
Which versions are affected by CVE-2017-9527?
It affects 2 products.
Products include Debian Debian Linux, Mruby Mruby.
How do I fix CVE-2017-9527?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2017-9527 being exploited?
There is no known exploitation of CVE-2017-9527 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2017-9527, GHSA-fxr6-v647-jgmq.