CVE-2020-25652
Publication date 3 November 2020
Last updated 18 August 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| spice-vdagent | 25.10 questing |
Fixed 0.20.0-1ubuntu0.1
|
| 25.04 plucky |
Fixed 0.20.0-1ubuntu0.1
|
|
| 24.04 LTS noble |
Fixed 0.20.0-1ubuntu0.1
|
|
| 22.04 LTS jammy |
Fixed 0.20.0-1ubuntu0.1
|
|
| 20.04 LTS focal |
Fixed 0.19.0-2ubuntu0.2
|
|
| 18.04 LTS bionic |
Fixed 0.17.0-1ubuntu2.2
|
|
| 16.04 LTS xenial |
Vulnerable
|
|
| 14.04 LTS trusty | Not in release |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.5 · Medium
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-4617-1
- SPICE vdagent vulnerabilities
- 4 November 2020