CVE-2017-6181

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-04-03 · updated 2026-06-17
Weakness: CWE-20

Description

The parse_char_class function in regparse.c in the Onigmo (aka Oniguruma-mod) regular expression library, as used in Ruby 2.4.0, allows remote attackers to cause a denial of service (deep recursion and application crash) via a crafted regular expression.

Affected products

Ruby: 2.4.0

References

http://www.securityfocus.com/bid/97304
https://bugs.ruby-lang.org/issues/13234
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/57660
http://www.securityfocus.com/bid/97304
https://bugs.ruby-lang.org/issues/13234
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/57660

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