NULL Pointer Dereference Affecting rh-php70-php-opcache package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.1% (42nd percentile)

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  • Snyk IDSNYK-RHEL7-RHPHP70PHPOPCACHE-4541421
  • published1 Nov 2021
  • disclosed22 Feb 2017

Introduced: 22 Feb 2017

CVE-2017-6441  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 rh-php70-php-opcache.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rh-php70-php-opcache package and not the rh-php70-php-opcache package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The _zval_get_long_func_ex in Zend/zend_operators.c in PHP 7.1.2 allows attackers to cause a denial of service (NULL pointer dereference and application crash) via crafted use of "declare(ticks=" in a PHP script. NOTE: the vendor disputes the classification of this as a vulnerability, stating "Please do not request CVEs for ordinary bugs. CVEs are relevant for security issues only.