Showing 1 vulnerability on this page for app-store-server-library

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Apple App Store Server Python Library: SignedDataVerifier accepts stale OCSP GOOD responses and can bypass certificate revocation checks

### Summary `SignedDataVerifier` attempts to perform online revocation checking when `enable_online_checks=True`, but its OCSP validation logic accepts stale `GOOD` responses as valid indefinitely. In `appstoreserverlibrary/signed_data_verifier.py`, `_ChainVerifier.check_ocsp_status()` verifies the OCSP response signature and CertID match, but never validates the freshness window carried by `producedAt`, `thisUpdate`, or `nextUpdate`. As a result, a previously valid signed OCSP `GOOD` response

CWE-295CWE-299Jul 13, 2026
CVSS-v4.0EPSS-PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX