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").
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.043 (90.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/105989 (VDB Entry, Third Party Advisory, vdb-entry)
- security.netapp.com/advisory/ntap-20181221-0005/ (Third Party Advisory)
- bugs.php.net/bug.php (Exploit, Mailing List, 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.