CVE-2014-0148 Denial of service in Qemu
An attacker with disk image access can cause a denial of service in Qemu via infinite loops in the VHDX block driver due to missing bounds checks.
- 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-2014-0148?
CVE-2014-0148 is a medium-severity denial of service vulnerability in Qemu Qemu, published on 11 Feb 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Qemu before 2.0 block driver for Hyper-V VHDX Images is vulnerable to infinite loops and other potential issues when calculating BAT entries, due to missing bounds checks for block_size and logical_sector_size variables. These are used to derive other fields like 'sectors_per_block' etc. A user able to alter the Qemu disk image could ise this flaw to crash the Qemu instance resulting in DoS.
Weakness: CWE-835
Which versions are affected by CVE-2014-0148?
It affects 9 products.
Products include Qemu Qemu, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Openstack Platform, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 3 more.
How do I fix CVE-2014-0148?
Upgrade to a fixed version.
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-2014-0148 being exploited?
There is no known exploitation of CVE-2014-0148 in the wild and no public exploit code.
Other vulnerabilities in Qemu Qemu
Sources
Also known as DEBIAN-CVE-2014-0148, GHSA-jh89-xppm-m3xg.