php: Null pointer dereference via crafted "declare(ticks="
Published Apr 3, 2017
7.5
HIGHCVSS 3.0
EPSS 1.83%
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.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
php
Not affected
Red Hat Enterprise Linux 5
php53
Not affected
Red Hat Enterprise Linux 6
php
Not affected
Red Hat Enterprise Linux 7
php
Not affected
Red Hat OpenShift Enterprise 2
php
Not affected
Red Hat Software Collections
rh-php56-php
Not affected
Red Hat Software Collections
rh-php70-php
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | php | Not affected | n/a |
| Red Hat Enterprise Linux 5 | php53 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | php | Not affected | n/a |
| Red Hat Enterprise Linux 7 | php | Not affected | n/a |
| Red Hat OpenShift Enterprise 2 | php | Not affected | n/a |
| Red Hat Software Collections | rh-php56-php | Not affected | n/a |
| Red Hat Software Collections | rh-php70-php | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.83% (0.01832) | 78.11th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.83% (0.01832) | 76.03th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.10% (0.00095) | 40.58th | v3 (v2023.03.01) |
| Jul 13, 2024 | 0.10% (0.00095) | 40.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00095) | 38.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.78% (0.00777) | 21.50th | v1 |
| Jan 6, 2022 | 0.78% (0.00777) | 20.90th | v1 |
| Sep 1, 2021 | 0.78% (0.00777) | 50.67th | v1 |
| Apr 14, 2021 | 0.78% (0.00777) | 0.00th | v1 |
References (6)
- https://access.redhat.com/security/cve/CVE-2017-6441 Vendor Advisory
- https://bugs.php.net/bug.php?id=74146 x_refsource_MISCIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1443487 Issue Tracking
- https://github.com/php/php-src/pull/2396 x_refsource_MISCPatch
- https://nvd.nist.gov/vuln/detail/CVE-2017-6441
- https://www.cve.org/CVERecord?id=CVE-2017-6441
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2017-6441 | Vendor Advisory | |
| https://bugs.php.net/bug.php?id=74146 | x_refsource_MISCIssue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1443487 | Issue Tracking | |
| https://github.com/php/php-src/pull/2396 | x_refsource_MISCPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-6441 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-6441 |
Change history (0)
No recorded changes yet.