CVE-2017-11465
CriticalSummary
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.
Risk Assessment
This vulnerability may lead to denial of service and potential bypass of the $SAFE protection mechanism, posing a security threat to applications.
Recommendation
It is recommended to update Ruby to the latest version to mitigate this vulnerability and to monitor applications for suspicious scripts.
Original NVD description (English source)
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.