Insecure AES-GCM Implementation in WebCrypto API Allows for Authentication Key Determination

CVE-2017-7822 · MEDIUM Severity

AV:N/AC:L/AU:N/C:P/I:N/A:N

The AES-GCM implementation in WebCrypto API accepts 0-length IV when it should require a length of 1 according to the NIST Special Publication 800-38D specification. This might allow for the authentication key to be determined in some instances. This vulnerability affects Firefox < 56.

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