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, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1114-1, DLA-1421-1, DSA-3966-1
Debian Bugs	873906

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ruby2.1 (PTS)	jessie, jessie (lts)	2.1.5-2+deb8u14	fixed
ruby2.3 (PTS)	stretch (security)	2.3.3-1+deb9u11	fixed
	stretch (lts), stretch	2.3.3-1+deb9u12	fixed

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

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

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