Detections
Analytics

PHP 7.3.0 [alpha|beta] < 7.3.0 Multiple vulnerabilities

high Nessus Plugin ID 111217

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Synopsis

An application installed on the remote host is affected by multiple vulnerabilities.

Description

According to its banner, the version of PHP running on the remote web server is 7.3.0 [alpha|beta] prior to 7.3.0. It is, therefore, affected by multiple vulnerabilities:

 - An arbitrary command injection vulnerability exists in the imap_open function due to improper filters for mailbox names prior to passing them to rsh or ssh commands. An authenticated, remote attacker can exploit this by sending a specially crafted IMAP server name to cause the execution of arbitrary commands on the target system. (CVE-2018-19518)

 - A denial of service vulnerability exists in the imap_mail function due to improper data validation. An unauthenticated, remote attacker can exploit this via an empty string in the message argument to the imap_mail function to cause the application to stop responding.
 (CVE-2018-19935)

 - A heap buffer over-read exists in the phar_parse_pharfile function.
 An unauthenticated, remote attacker can exploit this to read allocated or unallocated memory past the actual data when trying to parse a .phar file. (CVE-2018-20783)

Solution

Upgrade to PHP version 7.3.0 or later.

See Also

http://php.net/ChangeLog-7.php#7.3.0

Plugin Details

Severity: High

ID: 111217

File Name: php_7_3_0.nasl

Version: 1.13

Type: remote

Family: CGI abuses

Published: 7/20/2018

Updated: 9/3/2024

Configuration: Enable thorough checks

Supported Sensors: Nessus

Enable CGI Scanning: true

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 7

Vector: CVSS2#AV:N/AC:M/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2018-19518

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

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

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

CVSS Score Source: CVE-2018-20783

Vulnerability Information

CPE: cpe:/a:php:php

Required KB Items: www/PHP

Excluded KB Items: Settings/disable_cgi_scanning

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/19/2018

Vulnerability Publication Date: 6/3/2018

Exploitable With

Metasploit (php imap_open Remote Code Execution)

Reference Information

CVE: CVE-2018-19518, CVE-2018-19935, CVE-2018-20783

BID: 106018, 106143, 107121