mirror of
https://github.com/2dust/v2rayN.git
synced 2026-09-25 15:58:09 +03:00
Filter patterns (subscription subFilter, policy-group Filter, message MsgFilter) accept arbitrary user input while the tested text (remarks from subscriptions, log lines) is attacker-influenced. Regex.IsMatch without timeout hangs on evil patterns like (a+)+$ - a malicious subscription can freeze the UI/log pipeline on every update. Add Utils.IsRegexMatch with a 2s timeout; fail open (match) with a log so no node or message is silently dropped. Apply to all four call sites. Co-authored-by: sdhfsl <sdhfsl@users.noreply.github.com>