CVE-2024-31216 source-controller leaks theAzure Storage SAS token into logs on connection errors
Attackers with log access can steal Azure SAS tokens leaked during connection errors, gaining unauthorized access to Azure Blob Storage.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-31216?
CVE-2024-31216 is a medium-severity vulnerability in fluxcd source-controller, published on 15 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The source-controller is a Kubernetes operator, specialised in artifacts acquisition from external sources such as Git, OCI, Helm repositories and S3-compatible buckets. The source-controller implements the source.toolkit.fluxcd.io API and is a core component of the GitOps toolkit. Prior to version 1.2.5, when source-controller was configured to use an Azure SAS token when connecting to Azure Blob Storage, the token was logged along with the Azure URL when the controller encountered a connection error. An attacker with access to the source-controller logs could use the token to gain access to the Azure Blob Storage until the token expires. This vulnerability was fixed in source-controller v1.2.5. There is no workaround for this vulnerability except for using a different auth mechanism such as Azure Workload Identity.
Weakness: CWE-532
Which versions are affected by CVE-2024-31216?
3 open source packages ship an affected version, including github.com/fluxcd/source-controller.
| Package | Affected | Fixed in |
|---|---|---|
github.com/fluxcd/source-controller Go | All versions | 1.2.5 |
github.com/fluxcd/source-controller Go | All versions | 1.2.5 |
github.com/fluxcd/source-controller Go | All versions | 1.2.5 |
How do I fix CVE-2024-31216?
Upgrade github.com/fluxcd/source-controller to 1.2.5 or later.
Is CVE-2024-31216 being exploited?
There is no known exploitation of CVE-2024-31216 in the wild and no public exploit code.
Sources
Also known as GHSA-v554-xwgw-hc3w, GO-2024-2859.