Use After Free

Overview json is a JSON implementation as a Ruby extension in C. Affected versions of this package are vulnerable to Use After Free through JSON::ResumableParserpartialvalue in ext/json/ext/parser/parser.c. An attacker can crash the Ruby process by supplying truncated streaming JSON with duplicat...

Oj: Use-After-Free in Oj::Doc Iterators via Reentrant Close

Summary Oj::Doc iterators eachvalue, eachchild, eachleaf are vulnerable to a heap use-after-free. When a Ruby block yielded during iteration calls doc.close or d.close, the document's heap memory is freed while the C iterator is still running. When control returns from the block, the iterator rea...