CVE-2023-28433
MinIO fails to filter the `\` character, which allows for arbitrary object placement across buckets.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.98% probability · 60th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-668
- Affected
- minio/minio
- Source
- security-advisories@github.com
References
- https://github.com/minio/minio/commit/8d6558b23649f613414c8527b58973fbdfa4d1b8Patch
- https://github.com/minio/minio/commit/b3c54ec81e0a06392abfb3a1ffcdc80c6fbf6ebcPatch
- https://github.com/minio/minio/releases/tag/RELEASE.2023-03-20T20-16-18ZRelease Notes
- https://github.com/minio/minio/security/advisories/GHSA-w23q-4hw3-2pp6Vendor Advisory
- https://github.com/minio/minio/commit/8d6558b23649f613414c8527b58973fbdfa4d1b8Patch
- https://github.com/minio/minio/commit/b3c54ec81e0a06392abfb3a1ffcdc80c6fbf6ebcPatch
- https://github.com/minio/minio/releases/tag/RELEASE.2023-03-20T20-16-18ZRelease Notes
- https://github.com/minio/minio/security/advisories/GHSA-w23q-4hw3-2pp6Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.