CVE-2017-11465 : What You Need to Know

Ruby 2.4.1's parser_yyerror function vulnerability can lead to denial of service attacks and other security risks.

Understanding CVE-2017-11465

This CVE involves a vulnerability in the UTF-8 parser of Ruby version 2.4.1 that can be exploited by attackers.

What is CVE-2017-11465?

The function parser_yyerror in the UTF-8 parser of Ruby version 2.4.1 can be exploited by attackers to trigger a denial of service attack or potentially lead to other undefined consequences by using a specially crafted Ruby script.

The Impact of CVE-2017-11465

Attackers can cause a denial of service (DoS) through invalid write or read operations
Potential security implications, possibly bypassing the protection provided by the $SAFE mechanism

Technical Details of CVE-2017-11465

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability is linked to the function parser_tokadd_utf8 in parse.y.

Affected Systems and Versions

Ruby version 2.4.1

Exploitation Mechanism

Attackers exploit the parser_yyerror function in the UTF-8 parser of Ruby version 2.4.1

Mitigation and Prevention

Protecting systems from CVE-2017-11465 is crucial.

Immediate Steps to Take

Update Ruby to a patched version
Monitor for any unusual Ruby script behavior

Long-Term Security Practices

Regularly update Ruby and other software components
Implement secure coding practices

Patching and Updates

Apply patches provided by Ruby to address this vulnerability