CVE-2017-11424 (GCVE-0-2017-11424)
Vulnerability from cvelistv5
Published
2017-08-24 16:00
Modified
2024-08-05 18:12
Severity ?
CWE
  • n/a
Summary
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.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
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