CVE-2017-15121 Denial of service in Red Hat Enterprise Linux
A non-privileged user can crash the system by mounting a fuse filesystem and punching a hole in a misaligned file.
- 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-2017-15121?
CVE-2017-15121 is a medium-severity denial of service vulnerability in Redhat Enterprise Linux, published on 6 Dec 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A non-privileged user is able to mount a fuse filesystem on RHEL 6 or 7 and crash a system if an application punches a hole in a file that does not end aligned to a page boundary.
Weakness: CWE-20
Which versions are affected by CVE-2017-15121?
It affects 7 products.
Products include Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Server Tus and 1 more.
How do I fix CVE-2017-15121?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2017-15121 being exploited?
There is no known exploitation of CVE-2017-15121 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
- CVE-2018-14667 Red Hat JBoss RichFaces Framework Expression Language Injection
- CVE-2021-20325 Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit
- CVE-2018-25011 Memory corruption in libwebp
- CVE-2018-25014 Other in libwebp
- CVE-2014-3585 Supply chain in redhat-upgrade-tool
Sources
Also known as DEBIAN-CVE-2017-15121, GHSA-j44m-j98w-c9cw.