CVE-2017-14064

Name	CVE-2017-14064
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DLA-1114-1, DLA-1421-1, DSA-3966-1
NVD severity	high (attack range: remote)
Debian Bugs	873906

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ruby2.1 (PTS)	jessie	2.1.5-2+deb8u3	vulnerable
	jessie (security)	2.1.5-2+deb8u6	fixed
ruby2.3 (PTS)	stretch	2.3.3-1+deb9u2	fixed
	stretch (security)	2.3.3-1+deb9u4	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
ruby1.9.1	source	(unstable)	(unfixed)	high
ruby1.9.1	source	wheezy	1.9.3.194-8.1+deb7u6	high	DLA-1114-1
ruby2.1	source	(unstable)	(unfixed)	high
ruby2.1	source	jessie	2.1.5-2+deb8u4	high	DLA-1421-1
ruby2.3	source	(unstable)	2.3.3-1+deb9u1	high		873906
ruby2.3	source	stretch	2.3.3-1+deb9u1	high	DSA-3966-1

https://bugs.ruby-lang.org/issues/13853
https://github.com/flori/json/commit/8f782fd8e181d9cfe9387ded43a5ca9692266b85