CVE-2017-9226

Name	CVE-2017-9226
Description	An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap out-of-bounds write or read occurs in next_state_val() during regular expression compilation. Octal numbers larger than 0xff are not handled correctly in fetch_token() and fetch_token_in_cc(). A malformed regular expression containing an octal number in the form of '\700' would produce an invalid code point value larger than 0xff in next_state_val(), resulting in an out-of-bounds write memory corruption.
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-958-1
Debian Bugs	863314

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libonig (PTS)	jessie, jessie (lts)	5.9.5-3.2+deb8u6	fixed
	stretch (security), stretch (lts), stretch	6.1.3-2+deb9u2	fixed
	buster	6.9.1-1	fixed
	bullseye	6.9.6-1.1	fixed
	bookworm	6.9.8-1	fixed
	sid, trixie	6.9.9-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
libonig	source	wheezy	5.9.1-1+deb7u1	DLA-958-1
libonig	source	jessie	5.9.5-3.2+deb8u1
libonig	source	(unstable)	6.1.3-2		863314

Notes

https://github.com/kkos/oniguruma/commit/b4bf968ad52afe14e60a2dc8a95d3555c543353a
https://github.com/kkos/oniguruma/commit/f015fbdd95f76438cd86366467bb2b39870dd7c6
https://github.com/kkos/oniguruma/issues/55