CVE-2017-5340 Information

Description

Zend/zend_hash.c in PHP before 7.0.15 and 7.1.x before 7.1.1 mishandles certain cases that require large array allocations which allows remote attackers to execute arbitrary code or cause a denial of service (integer overflow uninitialized memory access and use of arbitrary destructor function pointers) via crafted serialized data.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/95371 http://www.securitytracker.com/id/1037659 https://access.redhat.com/errata/RHSA-2018:1296 https://bugs.php.net/bug.php?id=73832 https://github.com/php/php-src/commit/4cc0286f2f3780abc6084bcdae5dce595daa3c12 https://security.netapp.com/advisory/ntap-20180112-0001/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8