CVE-2020-25650 Denial of service in spice-vdagent

What is CVE-2020-25650?

CVE-2020-25650 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 25 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A flaw was found in the way the spice-vdagentd daemon handled file transfers from the host system to the virtual machine. Any unprivileged local guest user with access to the UNIX domain socket path `/run/spice-vdagentd/spice-vdagent-sock` could use this flaw to perform a memory denial of service for spice-vdagentd or even other processes in the VM system. The highest threat from this vulnerability is to system availability. This flaw affects spice-vdagent versions 0.20 and previous versions.

Weakness: CWE-770

Which versions are affected by CVE-2020-25650?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Spice-Space Spice-Vdagent.

How do I fix CVE-2020-25650?

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-2020-25650 being exploited?

There is no known exploitation of CVE-2020-25650 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-7362, DEBIAN-CVE-2020-25650, GHSA-f637-jpfq-3wv2, UBUNTU-CVE-2020-25650.