notation-go is a collection of libraries for supporting Notation sign, verify, push, and pull of oci artifacts. Prior to version 1.0.0-rc.3, notation-go users will find their application using excessive memory when verifying signatures. The application will be killed, and thus availability is impacted. The problem has been patched in the release v1.0.0-rc.3. Some workarounds are available. Users can review their own trust policy file and check if the identity string contains `=#`. Meanwhile, users should only put trusted certificates in their trust stores referenced by their own trust policy files, and make sure the `authenticity` validation is set to `enforce`.
CVE ID: CVE-2023-25656
CVSS Base Severity: HIGH
CVSS Base Score: 7.5
Vendor: notaryproject
Product: notation-go
EPSS Score: 0.1% (probability of being exploited)
EPSS Percentile: 42.95% (scored less or equal to compared to others)
EPSS Date: 2025-02-03 (when was this score calculated)