CVE-2017-14064

Ruby through 2.2.7, 2.3.x through 2.3.4, and 2.4.x through 2.4.1 can expose arbitrary memory during a JSON.generate call. The issues lies in using strdup in ext/json/ext/generator/generator.c, which will stop after encountering a '\0' byte, returning a pointer to a string of length zero, which is not the length stored in space_len.

• CWE-119

• http://www.securityfocus.com/bid/100890Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039363Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1042004Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2017:3485Third Party Advisory
• https://access.redhat.com/errata/RHSA-2018:0378Third Party Advisory
• https://access.redhat.com/errata/RHSA-2018:0583Third Party Advisory
• https://access.redhat.com/errata/RHSA-2018:0585Third Party Advisory
• https://bugs.ruby-lang.org/issues/13853Issue Tracking, Patch, Vendor Advisory
• https://github.com/flori/json/commit/8f782fd8e181d9cfe9387ded43a5ca9692266b85Issue Tracking, Patch, Third Party Advisory
• https://hackerone.com/reports/209949Exploit, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing List, Third Party Advisory
• https://security.gentoo.org/glsa/201710-18Third Party Advisory
• https://usn.ubuntu.com/3685-1/Third Party Advisory
• https://www.debian.org/security/2017/dsa-3966Third Party Advisory
• https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/Vendor Advisory
• https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/Vendor Advisory
• http://www.securityfocus.com/bid/100890Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039363Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1042004Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2017:3485Third Party Advisory
• https://access.redhat.com/errata/RHSA-2018:0378Third Party Advisory
• https://access.redhat.com/errata/RHSA-2018:0583Third Party Advisory
• https://access.redhat.com/errata/RHSA-2018:0585Third Party Advisory
• https://bugs.ruby-lang.org/issues/13853Issue Tracking, Patch, Vendor Advisory
• https://github.com/flori/json/commit/8f782fd8e181d9cfe9387ded43a5ca9692266b85Issue Tracking, Patch, Third Party Advisory
• https://hackerone.com/reports/209949Exploit, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing List, Third Party Advisory
• https://security.gentoo.org/glsa/201710-18Third Party Advisory
• https://usn.ubuntu.com/3685-1/Third Party Advisory
• https://www.debian.org/security/2017/dsa-3966Third Party Advisory
• https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/Vendor Advisory
• https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/Vendor Advisory

Published

Aug 31, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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