CVE-2023-28433 Minio Privilege Escalation on Windows via Path separator manipulation
Low-privilege users on Windows can escalate to admin by manipulating path separators to place objects in unauthorized buckets.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-28433?
CVE-2023-28433 is a high-severity vulnerability in minio, published on 22 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Minio is a Multi-Cloud Object Storage framework. All users on Windows prior to version RELEASE.2023-03-20T20-16-18Z are impacted. MinIO fails to filter the `\` character, which allows for arbitrary object placement across buckets. As a result, a user with low privileges, such as an access key, service account, or STS credential, which only has permission to `PutObject` in a specific bucket, can create an admin user. This issue is patched in RELEASE.2023-03-20T20-16-18Z. There are no known workarounds.
Weakness: CWE-668
Which versions are affected by CVE-2023-28433?
2 open source packages ship an affected version, including github.com/minio/minio. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/minio/minio Go | All versions | 0.0.0-202303200735 |
github.com/minio/minio Go | All versions | 0.0.0-202303200735 |
Products include Minio Minio.
How do I fix CVE-2023-28433?
Upgrade github.com/minio/minio to 0.0.0-202303200735 or later.
Is CVE-2023-28433 being exploited?
There is no known exploitation of CVE-2023-28433 in the wild and no public exploit code.
Other vulnerabilities in minio
Sources
Also known as GHSA-w23q-4hw3-2pp6, MINI-8x9f-qgw6-8mgp, MINI-pvfw-mwj4-mq3q.