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Read Limit Fix #537

merged 5 commits into from Aug 25, 2019

Read Limit Fix #537

merged 5 commits into from Aug 25, 2019


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@elithrar elithrar commented Aug 25, 2019

This fix addresses a potential denial-of-service (DoS) vector that can cause an integer overflow in the presence of malicious WebSocket frames.

The fix adds additional checks against the remaining bytes on a connection, as well as a test to prevent regression.

Credit to Max Justicz for discovering and reporting this, as well as providing a robust PoC and review.

@elithrar elithrar added the bug label Aug 25, 2019
@elithrar elithrar requested a review from garyburd Aug 25, 2019
@elithrar elithrar self-assigned this Aug 25, 2019
@elithrar elithrar merged commit 5b740c2 into master Aug 25, 2019
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@elithrar elithrar deleted the elithrar/read-limit-fix branch Aug 25, 2019
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