CVE-2017-6181

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 7.5/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://www.securityfocus.com/bid/97304Third Party Advisory, VDB Entry
https://bugs.ruby-lang.org/issues/13234Issue Tracking, Vendor Advisory
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/57660Issue Tracking, Vendor Advisory
http://www.securityfocus.com/bid/97304Third Party Advisory, VDB Entry
https://bugs.ruby-lang.org/issues/13234Issue Tracking, Vendor Advisory
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/57660Issue Tracking, Vendor Advisory

Timeline

Published: Apr 3, 2017
Last modified: Jun 17, 2026
NVD status: Modified

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