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{"bugzilla": {"description": "python-jwt: Incorrect handling of PEM-encoded public keys", "id": "1482529", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1482529"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "details": ["In PyJWT 1.5.0 and below the `invalid_strings` check in `HMACAlgorithm.prepare_key` does not account for all PEM encoded public keys. Specifically, the PKCS1 PEM encoded format would be allowed because it is prefaced with the string `-----BEGIN RSA PUBLIC KEY-----` which is not accounted for. This enables symmetric/asymmetric key confusion attacks against users using the PKCS1 PEM encoded public keys, which would allow an attacker to craft JWTs from scratch."], "name": "CVE-2017-11424", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "python-jwt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:storage:3", "fix_state": "Will not fix", "package_name": "python-jwt", "product_name": "Red Hat Storage 3"}], "public_date": "2017-06-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-11424\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-11424"], "threat_severity": "Moderate", "upstream_fix": "python-jwt 1.5.1"}