Canonical: >> Juju >> 3.3.2 Security Vulnerabilities
A vulnerability was identified in Juju from version 3.2.0 until 3.6.19 and from version 4.0 until 4.0.4, where the internal Dqlite database cluster fails to perform proper TLS client and server authentication. Specifically, the Juju controller's database endpoint does not validate client certificates when a new node attempts to join the cluster. An unauthenticated attacker with network reachability to the Juju controller's Dqlite port can exploit this flaw to join the database cluster. Once joined, the attacker gains full read and write access to the underlying database, allowing for total data compromise.
CVSS Score
10.0
EPSS Score
0.001
Published
2026-04-01
In Juju from version 3.0.0 through 3.6.18, when a secret owner grants permissions to a secret to a grantee, the secret owner relies exclusively on a predictable XID of the secret to verify ownership. This allows a malicious grantee which can request secrets to predict past secrets granted by the same secret owner to different grantees, allowing them to use the resources granted by those past secrets. Successful exploitation relies on a very specific configuration, specific data semantic, and the administrator having the need to deploy at least two different applications, one of them controlled by the attacker.
CVSS Score
6.6
EPSS Score
0.0
Published
2026-03-18
A race condition in the secrets management subsystem of Juju versions 3.0.0 through 3.6.18 allows an authenticated unit agent to claim ownership of a newly initialized secret. Between generating a Juju Secret ID and creating the secret's first revision, an attacker authenticated as another unit agent can claim ownership of a known secret. This leads to the attacking unit being able to read the content of the initial secret revision.
CVSS Score
5.3
EPSS Score
0.0
Published
2026-03-18
An authorization bypass vulnerability in the Vault secrets back-end implementation of Juju versions 3.1.6 through 3.6.18 allows an authenticated unit agent to perform unauthorized updates to secret revisions. With sufficient information, an attacker can poison any existing secret revision within the scope of that Vault secret back-end.
CVSS Score
7.6
EPSS Score
0.0
Published
2026-03-18
In Juju from version 3.0.0 through 3.6.18, the authorization of the "secret-set" tool is not performed correctly, which allows a grantee to update the secret content, and can lead to reading or updating other secrets. When the "secret-set" tool logs an error in an exploitation attempt, the secret is still updated contrary to expectations, and the new value is visible to both the owner and the grantee.
CVSS Score
8.8
EPSS Score
0.001
Published
2026-03-18
In Juju versions prior to 3.6.8 and 2.9.52, any authenticated controller user was allowed to upload arbitrary agent binaries to any model or to the controller itself, without verifying model membership or requiring explicit permissions. This enabled the distribution of poisoned binaries to new or upgraded machines, potentially resulting in remote code execution.
CVSS Score
8.8
EPSS Score
0.009
Published
2025-07-08
The /log endpoint on a Juju controller lacked sufficient authorization checks, allowing unauthorized users to access debug messages that could contain sensitive information.
CVSS Score
6.5
EPSS Score
0.001
Published
2025-07-08
The /charms endpoint on a Juju controller lacked sufficient authorization checks, allowing any user with an account on the controller to upload a charm. Uploading a malicious charm that exploits a Zip Slip vulnerability could allow an attacker to gain access to a machine running a unit through the affected charm.
CVSS Score
8.8
EPSS Score
0.002
Published
2025-07-08
JUJU_CONTEXT_ID is a predictable authentication secret. On a Juju machine (non-Kubernetes) or Juju charm container (on Kubernetes), an unprivileged user in the same network namespace can connect to an abstract domain socket and guess the JUJU_CONTEXT_ID value. This gives the unprivileged user access to the same information and tools as the Juju charm.
CVSS Score
8.7
EPSS Score
0.002
Published
2024-10-02
Vulnerable juju hook tool abstract UNIX domain socket. When combined with an attack of JUJU_CONTEXT_ID, any user on the local system with access to the default network namespace may connect to the @/var/lib/juju/agents/unit-xxxx-yyyy/agent.socket and perform actions that are normally reserved to a juju charm.
CVSS Score
6.5
EPSS Score
0.001
Published
2024-10-02
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