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CVE-2017-6441

** DISPUTED ** The _zval_get_long_func_ex in Zend/zend_operators.c in PHP 7.1.2 allows attackers...

7.5 HighFix availableDisputed

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.83%Up 1.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

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.

Record
CVE-2017-6441
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-476
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2017-6441
Updated
2026-11-02
EUVDEUVD-2017-15498 No score

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.

Record
EUVD-2017-15498
Updated
2026-11-03
GitHub AdvisoriesGHSA-cmfj-hp6v-cm88 7.5

** DISPUTED ** The _zval_get_long_func_ex in Zend/zend_operators.c in PHP 7.1.2 allows attackers...

** DISPUTED ** 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."

Record
GHSA-cmfj-hp6v-cm88
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
OSVBELL-CVE-2017-6441 7.5

CVE-2017-6441 does not affect BellSoft software

Record
BELL-CVE-2017-6441
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSV 7.5

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.

Record
CVE-2017-6441
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2017-6441 7.5

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.

Record
UBUNTU-CVE-2017-6441
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVSUSE-SU-2017:1717-1 No score

Security update for php7

This update for php7 fixes the following security issues:

  • CVE-2017-9224: stack out-of-bounds read occurs in match_at() could lead to Denial of service (bsc#1040891)
  • CVE-2017-9226: heap out-of-bounds write orread occurs in next_state_val() could lead to Denial of service(bsc#1040889)
  • CVE-2017-9227: stack out-of-bounds read in mbc_enc_len() could lead to Denial of service (bsc#1040883)
  • CVE-2017-6441: The _zval_get_long_func_ex in Zend/zend_operators.c in PHP allowed attackers to cause a denial of service (NULL pointer dereference and application crash) via crafted use of 'declare(ticks=' in a PHP script (bsc#1032155).
  • CVE-2016-6294: The locale_accept_from_http function in ext/intl/locale/locale_methods.c did not properly restrict calls to the ICU uloc_acceptLanguageFromHTTP function, which allowed remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a call with a long argument (bsc#1035111).
Record
SUSE-SU-2017:1717-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
php7
SUSE:Linux Enterprise Module for Web and Scripting 12
before 7.0.7-49.1
7.0.7-49.1
php7
SUSE:Linux Enterprise Software Development Kit 12 SP2
before 7.0.7-49.1
7.0.7-49.1
php5
Ubuntu:Pro:14.04:LTS
All versions, plus listed versions
5.5.3+dfsg-1ubuntu25.5.3+dfsg-1ubuntu35.5.6+dfsg-1ubuntu15.5.6+dfsg-1ubuntu25.5.8+dfsg-2ubuntu1
Show 44 moreShow less
5.5.9+dfsg-1ubuntu15.5.9+dfsg-1ubuntu25.5.9+dfsg-1ubuntu35.5.9+dfsg-1ubuntu45.5.9+dfsg-1ubuntu4.15.5.9+dfsg-1ubuntu4.25.5.9+dfsg-1ubuntu4.35.5.9+dfsg-1ubuntu4.45.5.9+dfsg-1ubuntu4.55.5.9+dfsg-1ubuntu4.65.5.9+dfsg-1ubuntu4.75.5.9+dfsg-1ubuntu4.95.5.9+dfsg-1ubuntu4.115.5.9+dfsg-1ubuntu4.125.5.9+dfsg-1ubuntu4.135.5.9+dfsg-1ubuntu4.145.5.9+dfsg-1ubuntu4.165.5.9+dfsg-1ubuntu4.175.5.9+dfsg-1ubuntu4.195.5.9+dfsg-1ubuntu4.205.5.9+dfsg-1ubuntu4.215.5.9+dfsg-1ubuntu4.225.5.9+dfsg-1ubuntu4.235.5.9+dfsg-1ubuntu4.245.5.9+dfsg-1ubuntu4.255.5.9+dfsg-1ubuntu4.265.5.9+dfsg-1ubuntu4.275.5.9+dfsg-1ubuntu4.295.5.9+dfsg-1ubuntu4.29+esm15.5.9+dfsg-1ubuntu4.29+esm25.5.9+dfsg-1ubuntu4.29+esm35.5.9+dfsg-1ubuntu4.29+esm45.5.9+dfsg-1ubuntu4.29+esm55.5.9+dfsg-1ubuntu4.29+esm65.5.9+dfsg-1ubuntu4.29+esm85.5.9+dfsg-1ubuntu4.29+esm105.5.9+dfsg-1ubuntu4.29+esm115.5.9+dfsg-1ubuntu4.29+esm125.5.9+dfsg-1ubuntu4.29+esm135.5.9+dfsg-1ubuntu4.29+esm145.5.9+dfsg-1ubuntu4.29+esm155.5.9+dfsg-1ubuntu4.29+esm165.5.9+dfsg-1ubuntu4.29+esm175.5.9+dfsg-1ubuntu4.29+esm18
None known
php7.0
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
7.0.1-57.0.1-67.0.2-17.0.2-37.0.2-4
Show 45 moreShow less
7.0.2-57.0.3-27.0.3-37.0.3-9ubuntu17.0.4-5ubuntu17.0.4-5ubuntu27.0.4-7ubuntu17.0.4-7ubuntu27.0.4-7ubuntu2.17.0.8-0ubuntu0.16.04.17.0.8-0ubuntu0.16.04.27.0.8-0ubuntu0.16.04.37.0.13-0ubuntu0.16.04.17.0.15-0ubuntu0.16.04.17.0.15-0ubuntu0.16.04.27.0.15-0ubuntu0.16.04.47.0.18-0ubuntu0.16.04.17.0.22-0ubuntu0.16.04.17.0.25-0ubuntu0.16.04.17.0.28-0ubuntu0.16.04.17.0.30-0ubuntu0.16.04.17.0.32-0ubuntu0.16.04.17.0.33-0ubuntu0.16.04.17.0.33-0ubuntu0.16.04.27.0.33-0ubuntu0.16.04.37.0.33-0ubuntu0.16.04.47.0.33-0ubuntu0.16.04.57.0.33-0ubuntu0.16.04.67.0.33-0ubuntu0.16.04.77.0.33-0ubuntu0.16.04.97.0.33-0ubuntu0.16.04.117.0.33-0ubuntu0.16.04.127.0.33-0ubuntu0.16.04.147.0.33-0ubuntu0.16.04.157.0.33-0ubuntu0.16.04.167.0.33-0ubuntu0.16.04.16+esm17.0.33-0ubuntu0.16.04.16+esm27.0.33-0ubuntu0.16.04.16+esm37.0.33-0ubuntu0.16.04.16+esm47.0.33-0ubuntu0.16.04.16+esm57.0.33-0ubuntu0.16.04.16+esm67.0.33-0ubuntu0.16.04.16+esm77.0.33-0ubuntu0.16.04.16+esm87.0.33-0ubuntu0.16.04.16+esm97.0.33-0ubuntu0.16.04.16+esm10
None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-6441 is a high vulnerability (CVSS 7.5) in Php, published April 3, 2017. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 1.83%, the 78th percentile. Fixed in php7 7.0.7-49.1.

References

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Left out here: 12 versions. The JSON record has them.

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