fix(envd): use constant-time comparison for signature validation#3145
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AdaAibaby wants to merge 2 commits into
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fix(envd): use constant-time comparison for signature validation#3145AdaAibaby wants to merge 2 commits into
AdaAibaby wants to merge 2 commits into
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Replace string inequality operator (!=) with crypto/subtle.ConstantTimeCompare for signature validation in auth.go. The previous implementation was vulnerable to timing attacks, where an attacker could potentially determine the correct signature byte-by-byte by measuring response times. This is a standard security best practice for comparing cryptographic values such as HMAC signatures, tokens, and hashes.
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Add 6 test cases covering validateSigning: - Accepts correct signature with expiration - Rejects wrong signature - Rejects expired signature - Rejects missing signature parameter - Accepts valid access token from header - Rejects invalid access token from header Also refactor existing tests to use a shared helper.
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Replace string inequality operator (!=) with crypto/subtle.ConstantTimeCompare for signature validation in auth.go. The previous implementation was vulnerable to timing attacks, where an attacker could potentially determine the correct signature byte-by-byte by measuring response times.
This is a standard security best practice for comparing cryptographic values such as HMAC signatures, tokens, and hashes.
/cc @jakubno @dobrac @ValentaTomas Would appreciate your review on this change, thanks!