NULL pointer dereference in Php

CVE-2018-19395

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").

EPSS: 0.043 (90.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Php
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
  • cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
  • cve@mitre.org (Exploit, Mailing List, x_refsource_MISC, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2018-19395?
CVE-2018-19395 is a high-severity vulnerability in Php, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2018-11-20.
How severe is CVE-2018-19395?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-19395 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.