Description
Netgate pfSense CE 2.3.0 through 2.9.0 contains a stored cross-site scripting vulnerability that allows authenticated users with Firewall: Rules or NAT: Port Forward privileges to inject scripts via the separator color field. Attackers can submit a crafted separator[] color value that display_separator() renders unencoded into class attributes, executing in administrators' browsers to perform WebGUI actions with their privileges.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
Passive
Confidentiality (Vulnerable System)
Low
Integrity (Vulnerable System)
Low
Availability (Vulnerable System)
None
Confidentiality (Subsequent System)
Low
Integrity (Subsequent System)
Low
Availability (Subsequent System)
None
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected products
- Netgate / pfSense CE2.3.0 – 2.9.0
- pfSense / pfsense2.3.0 – 2.9.0
References
- MISChttps://github.com/abraxas/pfsense-separator-color-xss
- MISChttps://abraxaslabs.tech/research/pfsense-ce-leftovers
- MISChttps://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/filter.inc#L6238-L6252
- MISChttps://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L236-L245
- VENDOR_ADVISORYhttps://www.vulncheck.com/advisories/netgate-pfsense-ce-2.3.0-through-2.9.0-stored-xss-via-separator-color
Updated 10m ago · 8 sources