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Advisories

Netgate pfSense CE 2.5.0 through 2.9.0 OS Command Injection via openvpn.learn-address.sh

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Severity
low
Date
Affecting

  • pfSense CE >= 2.5.0, <= 2.9.0

CWE
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSS
2.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Credit
Abraxas Labs
Description
Netgate pfSense CE 2.5.0 through 2.9.0 contains an OS command injection vulnerability in openvpn.learn-address.sh that allows authenticated VPN clients to execute commands as the unbound user. Attackers can embed shell metacharacters in the certificate common name or username, which is interpolated unquoted into su -c strings, when DNS Resolver client registration is enabled.

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