CVE-2020-25652

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-11-26 · updated 2026-06-17
Weakness: CWE-770

Description

A flaw was found in the spice-vdagentd daemon, where it did not properly handle client connections that can be established via the UNIX domain socket in `/run/spice-vdagentd/spice-vdagent-sock`. Any unprivileged local guest user could use this flaw to prevent legitimate agents from connecting to the spice-vdagentd daemon, resulting in a denial of service. The highest threat from this vulnerability is to system availability. This flaw affects spice-vdagent versions 0.20 and prior.

Affected products

Debian Linux: 9.0
Fedoraproject Fedora: 32, 33
Spice-Space Spice-Vdagent: through 0.20.0

References

https://bugzilla.redhat.com/show_bug.cgi?id=1886366
https://lists.debian.org/debian-lts-announce/2021/01/msg00012.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GQT56LATVTB2DJOVVJOKQVMVUXYCT2VB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIWJ2EIQXWEA2VDBODEATHAT37X4CREP/
https://www.openwall.com/lists/oss-security/2020/11/04/1
https://bugzilla.redhat.com/show_bug.cgi?id=1886366
https://lists.debian.org/debian-lts-announce/2021/01/msg00012.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GQT56LATVTB2DJOVVJOKQVMVUXYCT2VB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIWJ2EIQXWEA2VDBODEATHAT37X4CREP/
https://www.openwall.com/lists/oss-security/2020/11/04/1

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