Vulnerability CVE-2018-19395

Vulnerability Name:

CVE-2018-19395 (CCN-153217)

Assigned:

2018-11-19

Published:

2018-11-19

Updated:

2018-12-27

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").

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

CWE-476

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2018-19395

Source: CCN
Type: PHP Web site
PHP

Source: BID
Type: Third Party Advisory, VDB Entry
105989

Source: CCN
Type: PHP Bug #77177
Serializing or unserializing COM objects crashes

Source: MISC
Type: Exploit, Issue Tracking, Mailing List, Vendor Advisory
https://bugs.php.net/bug.php?id=77177

Source: XF
Type: UNKNOWN
php-cve201819395-dos(153217)

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20181221-0005/

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-19395

Vulnerable Configuration:

Configuration 1:

cpe:/a:php:php:*:*:*:*:*:*:*:* (Version >= 5.0.0 and <= 7.1.24)

Configuration CCN 1:

cpe:/a:php:php:7.1.24:-:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.bionic:def:201819395000	V	CVE-2018-19395 on Ubuntu 18.04 LTS (bionic) - medium.	2018-11-20
oval:com.ubuntu.cosmic:def:2018193950000000	V	CVE-2018-19395 on Ubuntu 18.10 (cosmic) - medium.	2018-11-20
oval:com.ubuntu.cosmic:def:201819395000	V	CVE-2018-19395 on Ubuntu 18.10 (cosmic) - medium.	2018-11-20
oval:com.ubuntu.bionic:def:2018193950000000	V	CVE-2018-19395 on Ubuntu 18.04 LTS (bionic) - medium.	2018-11-20
oval:com.ubuntu.trusty:def:201819395000	V	CVE-2018-19395 on Ubuntu 14.04 LTS (trusty) - medium.	2018-11-20
oval:com.ubuntu.xenial:def:2018193950000000	V	CVE-2018-19395 on Ubuntu 16.04 LTS (xenial) - medium.	2018-11-20
oval:com.ubuntu.xenial:def:201819395000	V	CVE-2018-19395 on Ubuntu 16.04 LTS (xenial) - medium.	2018-11-20

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