Denial of Service and Potential Bypass of $SAFE Protection Mechanism in Ruby 2.4.1 UTF-8 Parser

CVE-2017-11465 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

The parser_yyerror function in the UTF-8 parser in Ruby 2.4.1 allows attackers to cause a denial of service (invalid write or read) or possibly have unspecified other impact via a crafted Ruby script, related to the parser_tokadd_utf8 function in parse.y. NOTE: this might have security relevance as a bypass of a $SAFE protection mechanism.

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