Advisories

Netgate pfSense CE 2.7.0 through 2.9.0 Command Injection via IPsec Mobile Login Banner

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Severity
high
Date
Affecting
  • pfSense CE >= 2.7.0, <= 2.9.0

CWE
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CVSS
8.6
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Abraxas Labs
Description
Netgate pfSense CE 2.7.0 through 2.9.0 contains a configuration injection vulnerability that allows authenticated users with IPsec Mobile privileges to execute commands as root via the login_banner field. Attackers can submit a single-line banner containing '}' to escape the unquoted strongswan.conf attr value and define charon.start-scripts entries that charon executes as root on restart.

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