CVE-2016-5771
CRITICAL severity · CVSS 9.8 · Use-after-free
9.8CVSS CRITICAL
Summary
spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)15%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=1 ↗
Additional information
- NVD record
- http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=1Patch
- http://php.net/ChangeLog-5.phpPatch
- http://www.openwall.com/lists/oss-security/2016/06/23/4Patch
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.htmlAdvisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.htmlAdvisory
- http://rhn.redhat.com/errata/RHSA-2016-2750.htmlAdvisory
- http://www.debian.org/security/2016/dsa-3618Advisory