CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.3 | $0-$5k | 0.00 |
A vulnerability was found in PHP 7.1.2 (Programming Language Software). It has been rated as problematic. This issue affects an unknown code block of the file Zend/zend_operators.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:
** 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."
The weakness was released 04/03/2017 (Website). It is possible to read the advisory at bugs.php.net. The identification of this vulnerability is CVE-2017-6441 since 03/02/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.
The real existence of this vulnerability is still doubted at the moment. The vulnerability scanner Nessus provides a plugin with the ID 101287 (openSUSE Security Update : php7 (openSUSE-2017-790)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170133 (SUSE Enterprise Linux Security Update for php7 (SUSE-SU-2017:1717-1)).
Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (101287).
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.4VulDB Meta Temp Score: 6.3
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Null pointer dereferenceCWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 101287
Nessus Name: openSUSE Security Update : php7 (openSUSE-2017-790)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Patch: github.com
Timeline
03/02/2017 🔍04/03/2017 🔍
04/03/2017 🔍
04/03/2017 🔍
07/06/2017 🔍
07/07/2017 🔍
11/24/2022 🔍
Sources
Product: php.orgAdvisory: 74146
Status: Not defined
Disputed: 🔍
CVE: CVE-2017-6441 (🔍)
OSVDB: - CVE-2017-6441 - PHP - Denial of Service Issue
Entry
Created: 04/03/2017 16:59Updated: 11/24/2022 18:42
Changes: 04/03/2017 16:59 (67), 08/25/2020 12:55 (3), 11/24/2022 18:42 (5)
Complete: 🔍
Cache ID: 3:F5A:103
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