CVE-2017-12933

Name	CVE-2017-12933
Description	The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.
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-1076-1, DSA-4080-1, DSA-4081-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
php5 (PTS)	jessie, jessie (lts)	5.6.40+dfsg-0+deb8u21	fixed
php7.0 (PTS)	stretch (security)	7.0.33-0+deb9u12	fixed
	stretch (lts), stretch	7.0.33-0+deb9u19	fixed

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

Package	Type	Release	Fixed Version	Origin
php5	source	wheezy	5.4.45-0+deb7u11	DLA-1076-1
php5	source	jessie	5.6.33+dfsg-0+deb8u1	DSA-4081-1
php5	source	(unstable)	(unfixed)
php7.0	source	stretch	7.0.27-0+deb9u1	DSA-4080-1
php7.0	source	(unstable)	7.0.22-1
php7.1	source	(unstable)	7.1.8-1

Fixed in 7.1.7, 7.0.21, 5.6.31
PHP Bug: https://bugs.php.net/bug.php?id=74111