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Vulnerable juju introspection abstract UNIX domain socket

High
hpidcock published GHSA-xwgj-vpm9-q2rq Oct 2, 2024

Package

No package listed

Affected versions

<= 3.5.3, <= 3.4.5, <= 3.3.6, <= 3.2.4, <= 3.1.9, <= 2.9.50

Patched versions

3.5.4, 3.4.6, 3.3.7, 3.1.10, 2.9.51

Description

Impact

An abstract UNIX domain socket responsible for introspection is available without authentication locally to any user with access to the network namespace where the local juju agent is running.

On a juju controller agent, denial of service can be performed by using the /leases/revoke endpoint. Revoking leases in juju can cause availability issues.

On a juju machine agent that is hosting units, disabling the unit component can be performed using the /units endpoint with a "stop" action.

Patches

Patch: 43f0fc5
Patched in:

  • 3.5.4
  • 3.4.6
  • 3.3.7
  • 3.1.10
  • 2.9.51

Workarounds

No workaround.

References

path := "@" + config.SocketName

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

CVE ID

CVE-2024-8038

Weaknesses

Credits