CVE-2017-12934

NameCVE-2017-12934
Descriptionext/standard/var_unserializer.re in PHP 7.0.x before 7.0.21 and 7.1.x before 7.1.7 is prone to a heap use after free while unserializing untrusted data, related to the zval_get_type function in Zend/zend_types.h. Exploitation of this issue can have an unspecified impact on the integrity of PHP.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-4080-1

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
php7.0sourcestretch7.0.27-0+deb9u1DSA-4080-1
php7.0source(unstable)7.0.22-1
php7.1source(unstable)7.1.8-1

Notes

Fixed in 7.1.7, 7.0.21
PHP Bug: https://bugs.php.net/bug.php?id=74101

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