CVE-2016-7480

critical

Description

The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access) via crafted serialized data.

References

http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7

http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf

http://php.net/ChangeLog-7.php

http://www.securityfocus.com/bid/95152

https://bugs.php.net/bug.php?id=73257

https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4

https://security.netapp.com/advisory/ntap-20180112-0001/

https://www.youtube.com/watch?v=LDcaPstAuPk

Details

Source: MITRE

Published: 2017-01-11

Updated: 2018-01-14

Type: CWE-119

Risk Information

CVSS v2

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL