Improper Certificate Validation Affecting github.com/in-toto/go-witness/attestation/aws-iid package, versions <0.9.0
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-GITHUBCOMINTOTOGOWITNESSATTESTATIONAWSIID-13569624
- published16 Oct 2025
- disclosed15 Oct 2025
- creditUnknown
Introduced: 15 Oct 2025
NewCVE-2025-62375 (opens in a new tab)How to fix?
Upgrade github.com/in-toto/go-witness/attestation/aws-iid to version 0.9.0 or higher.
Overview
Affected versions of this package are vulnerable to Improper Certificate Validation via improper verification of AWS EC2 identity documents in the aws-iid process. An attacker can cause the system to accept forged identity documents by providing documents with missing or invalid signatures, or by exploiting failures in RSA verification. This is only exploitable if the AWS attestor is used and the system relies on the hard-coded certificate without additional trusted data for region validation.
Workaround
This vulnerability can be mitigated by manually verifying the identity documents and signatures using the openssl command line as documented by AWS.