Improper Verification of Cryptographic Signature Affecting github.com/minio/minio/cmd package, versions <RELEASE.2025-04-03T14-56-28Z
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMMINIOMINIOCMD-9653018
- published4 Apr 2025
- disclosed3 Apr 2025
- creditUnknown
Introduced: 3 Apr 2025
NewCVE-2025-31489 Â (opens in a new tab)How to fix?
Upgrade github.com/minio/minio/cmd to version RELEASE.2025-04-03T14-56-28Z or higher.
Overview
github.com/minio/minio/cmd is an open source object storage server compatible with Amazon S3 APIs.
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature for unsigned-trailer uploads. An attacker can upload arbitrary objects to buckets by using any secret, provided they have prior WRITE permissions and knowledge of the access-key and bucket name.
Workaround
This can be mitigated by rejecting requests with x-amz-content-sha256: STREAMING-UNSIGNED-PAYLOAD-TRAILER for now at LB layer, and asking application users to use STREAMING-AWS4-HMAC-SHA256-PAYLOAD-TRAILER.