CVE-2018-19395

HIGH severity · CVSS 7.5 · CWE-476

7.5CVSS HIGH

Summary

ext/standard/var.c in PHP 5.x through 7.1.24 on Windows allows attackers to cause a denial of service (NULL pointer dereference and application crash) because com and com_safearray_proxy return NULL in com_properties_get in ext/com_dotnet/com_handlers.c, as demonstrated by a serialize call on COM("WScript.Shell").

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)2%

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

PHP

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
https://bugs.php.net/bug.php?id=77177Advisory
https://bugs.php.net/bug.php?id=77177Advisory
http://www.securityfocus.com/bid/105989Advisory
https://security.netapp.com/advisory/ntap-20181221-0005/Advisory
http://www.securityfocus.com/bid/105989Advisory
https://security.netapp.com/advisory/ntap-20181221-0005/Advisory