Command injection in PHP - CVE-2018-19518

Vulnerability identifier: #VU16067

CSH Severity: Low

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-19518

CWE-ID: CWE-77

Exploitation vector: Remote access

Exploit availability: Public exploit is available

The vulnerability allows a remote authenticated attacker to execute arbitrary commands on the target system.

The weakness exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted data to inject and execute arbitrary commands.

PHP
Debian Linux
Amazon Linux AMI
Gentoo Linux
Fedora
Opensuse
php7 (Alpine package)
uw-imap (Ubuntu package)
php
Flex System Chassis Management Module (CMM)

Install update from vendor's website.

php7 (Alpine package) - update to 7.1.30-r0
uw-imap (Ubuntu package) - addressed in versions 8:2007f~dfsg-5ubuntu0.18.04.2, 8:2007f~dfsg-5ubuntu0.19.04.2, 8:2007f~dfsg-4+deb8u1build0.16.04.1
Flex System Chassis Management Module (CMM) - update to 2pet18c-2.5.16c
php - addressed in versions 7.2.13-2.fc28, 7.2.13-2.fc29

• Exploit #5965 - Horde Imp - 'imap_open' Remote Command Execution (June 17, 2021)
• Exploit #1567 - php imap_open Remote Code Execution (March 18, 2020)

• https://bugs.php.net/bug.php?id=77153
• https://github.com/Bo0oM/PHP_imap_open_exploit/blob/master/exploit.php

• Multiple vulnerabilities in PHP
• OpenSUSE Linux update for php5
• openSUSE update for php7
• Debian update for php7.0
• Amazon Linux AMI update for php56, php70, php71, php72
• Ubuntu update for UW IMAP
• Gentoo update for PHP
• Command injection in php7 (Alpine package)
• IBM Flex System Chassis Management Module update for PHP
• Fedora 28 update for php
• Fedora 29 update for php