Description
Netgate pfSense CE through 2.9.0 contains a php.ini injection vulnerability that allows authenticated users with General Setup privileges to inject directives by submitting an unvalidated timezone value. Attackers can embed a quote and newline to add auto_prepend_file pointing at /var/db/zoneinfo, executing PHP as root after php.ini is regenerated at boot or php-fpm restart.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
High
User Interaction
None
Confidentiality (Vulnerable System)
High
Integrity (Vulnerable System)
High
Availability (Vulnerable System)
High
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
None
Availability (Subsequent System)
None
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Netgate / pfSense CE0 – 2.9.0
- pfSense / pfsense2.9.0
References
- MISChttps://github.com/abraxas/pfsense-timezone-phpini
- MISChttps://abraxaslabs.tech/research/pfsense-ce-leftovers
- MISChttps://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/system.php#L288
- MISChttps://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/system.inc#L2377-L2380
- MISChttps://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/rc.php_ini_setup#L163-L166
- MISChttps://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/rc.php_ini_setup#L220
- VENDOR_ADVISORYhttps://www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-php-ini-injection-via-timezone-setting
Updated 20m ago · 8 sources