Signature Verification
A security mechanism that verifies the authenticity and integrity of a request's origin by validating a cryptographic signature attached to the request, such as one based on HMAC. It is widely used in webhooks and service-to-service communication.
Timeline (last 90 days)
If the mod loading process lacks signature verification or sandbox isolation, attackers may gain code execution permissions through malicious mods.
The signature verification process includes: extracting the signature field, using the public key to verify that the signature matches the payload, checking the timestamp deviation (typically 5 minutes), and querying the nonce cache to confirm it has not been processed; failure at any step should terminate processing and log a security event.
Defensive checks include explicitly parsing the range declaration, asserting non-empty coverage, unifying the parsing path, rejecting implicit defaults, and covering malicious ranges in regression tests.
A common mistake in signature verification is asking only "is the signature valid?" rather than "what does the signature cover?"
Signature verification must be based on the raw request body and cannot use the framework-parsed JSON object, because re-serialization changes the bytes and the signature will not match.
All Facts (5)
If the mod loading process lacks signature verification or sandbox isolation, attackers may gain code execution permissions through malicious mods.
50%UnverifiedThe signature verification process includes: extracting the signature field, using the public key to verify that the signature matches the payload, checking the timestamp deviation (typically 5 minutes), and querying the nonce cache to confirm it has not been processed; failure at any step should terminate processing and log a security event.
50%UnverifiedDefensive checks include explicitly parsing the range declaration, asserting non-empty coverage, unifying the parsing path, rejecting implicit defaults, and covering malicious ranges in regression tests.
50%UnverifiedA common mistake in signature verification is asking only "is the signature valid?" rather than "what does the signature cover?"
50%UnverifiedSignature verification must be based on the raw request body and cannot use the framework-parsed JSON object, because re-serialization changes the bytes and the signature will not match.
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