CVE-2020-4756 Denial of service in Elastic Storage Server
A local attacker can crash the kernel by invoking specific ioctls with invalid arguments, causing a denial of service in IBM Spectrum Scale.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-4756?
CVE-2020-4756 is a medium-severity denial of service vulnerability in Ibm Spectrum Scale, published on 20 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
IBM Spectrum Scale V4.2.0.0 through V4.2.3.23 and V5.0.0.0 through V5.0.5.2 as well as IBM Elastic Storage System 6.0.0 through 6.0.1.0 could allow a local attacker to invoke a subset of ioctls on the device with invalid arguments that could crash the keneral and cause a denial of service. IBM X-Force ID: 188599.
Weakness: CWE-404
Which versions are affected by CVE-2020-4756?
It affects 2 products.
Products include Ibm Elastic Storage Server, Ibm Spectrum Scale.
How do I fix CVE-2020-4756?
No fix has been published for CVE-2020-4756 yet. Limit exposure of the affected software until one is available.
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-2020-4756 being exploited?
There is no known exploitation of CVE-2020-4756 in the wild and no public exploit code.
Other vulnerabilities in Ibm Spectrum Scale
Sources
Also known as GHSA-46j4-jqcq-j7qj.