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Fencer Vulns
high 7.5

CVE-2017-6441 json

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 an…

published 2017-04-03 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-15498

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

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.

Patch / fix

  • php7 SLE Software Development Kit 12 SP2, SLE Module for Web and Scripting 12 7.0.7-49.1

suse advisories SUSE-SU-2017:1717-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-6441 updated cvss 5.5

php: Null pointer dereference via crafted "declare(ticks="

  • Red Hat Software Collections rh-php70-php, rh-php70-php-gd, rh-php70-php-cli, rh-php70-php-dba, rh-php70-php-dbg, rh-php70-php-fpm, +24 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 5 php, php53 Red Hat Enterprise Linux 6 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +20 more Red Hat Enterprise Linux 7 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +18 more Red Hat OpenShift Enterprise 2 php Red Hat Software Collections rh-php56-php, rh-php56-php-gd, rh-php56-php-cli, rh-php56-php-dba, rh-php56-php-dbg, rh-php56-php-fpm, +22 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.83% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.