CVE-2020-10703 Null dereference in libvirt
Unprivileged users can crash the libvirt daemon via a null pointer dereference in storage pool fetching, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-10703?
CVE-2020-10703 is a medium-severity vulnerability in Redhat Libvirt, published on 2 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A NULL pointer dereference was found in the libvirt API responsible introduced in upstream version 3.10.0, and fixed in libvirt 6.0.0, for fetching a storage pool based on its target path. In more detail, this flaw affects storage pools created without a target path such as network-based pools like gluster and RBD. Unprivileged users with a read-only connection could abuse this flaw to crash the libvirt daemon, resulting in a potential denial of service.
Weakness: CWE-476
Which versions are affected by CVE-2020-10703?
It affects 1 product.
Linux distribution packages (7)
libvirt SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 4.0.0-9.32.1 |
libvirt SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 4.0.0-9.32.1 |
libvirt SUSE:Linux Enterprise Server 12 SP4 | All versions | 4.0.0-8.20.2 |
libvirt SUSE:Linux Enterprise Server 15-LTSS | All versions | 4.0.0-9.32.1 |
libvirt SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 4.0.0-8.20.2 |
libvirt SUSE:Linux Enterprise Server for SAP Applications 15 | All versions | 4.0.0-9.32.1 |
libvirt SUSE:Linux Enterprise Software Development Kit 12 SP4 | All versions | 4.0.0-8.20.2 |
Products include Redhat Libvirt.
How do I fix CVE-2020-10703?
Upgrade to a fixed version.
Is CVE-2020-10703 being exploited?
There is no known exploitation of CVE-2020-10703 in the wild and no public exploit code.
Other vulnerabilities in Redhat Libvirt
Sources
Also known as DEBIAN-CVE-2020-10703, GHSA-c69p-28r6-q952, SUSE-SU-2020:1250-1, SUSE-SU-2020:1289-1, UBUNTU-CVE-2020-10703.