CVE-2017-11465

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-07-19 · updated 2026-06-17
Weakness: CWE-125

Description

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.

Affected products

Ruby: 2.4.1

References

https://bugs.ruby-lang.org/issues/13742
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/59344
https://bugs.ruby-lang.org/issues/13742
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/59344

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