How we found a Prototype Pollution in protobuf.js
Our colleagues Peter Samarin, Norbert Schneider and Fabian Meumertzheim recently built a new bug detector enabling our JavaScript fuzzing engine Jazzer.js to identify Prototype Pollution. This work is now bearing its first fruits: As part of our ongoing collaboration with Google’s OSS-Fuzz, Jazzer.js recently uncovered a new Prototype Pollution vulnerability in protobuf.js (CVE-2023-36665). This finding puts affected applications at risk of remote code execution and denial of service attacks.