CVE-2025-3931 Information

Description

A flaw was found in Yggdrasil which acts as a system broker allowing the processes to communicate to other children’s \worker\ processes through the DBus component. Yggdrasil creates a DBus method to dispatch messages to workers. However it misses authentication and authorization checks allowing every system user to call it. One available Yggdrasil worker acts as a package manager with capabilities to create and enable new repositories and install or remove packages.

This flaw allows an attacker with access to the system to leverage the lack of authentication on the dispatch message to force the Yggdrasil worker to install arbitrary RPM packages. This issue results in local privilege escalation enabling the attacker to access and modify sensitive system data.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://access.redhat.com/errata/RHSA-2025:7592 https://access.redhat.com/security/cve/CVE-2025-3931 https://bugzilla.redhat.com/show_bug.cgi?id=2362345

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8