CVE-2017-6441 Null dereference in n/a
Attackers can cause a denial of service via a NULL pointer dereference in the PHP interpreter when processing crafted declare statements.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-6441?
CVE-2017-6441 is a high-severity vulnerability in Php Php, published on 3 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-476
Which versions are affected by CVE-2017-6441?
It affects 1 product.
Products include Php Php.
How do I fix CVE-2017-6441?
Apply the vendor's patch.
Is CVE-2017-6441 being exploited?
There is no known exploitation of CVE-2017-6441 in the wild and no public exploit code.
Other vulnerabilities in Php Php
Sources
Also known as GHSA-cmfj-hp6v-cm88, UBUNTU-CVE-2017-6441.