Vulnerability in opnsense core

[ Description ]Official description

OPNsense core before 26.7.8 contains a configuration line injection vulnerability that allows authenticated users with wireless-edit privilege to inject directives by embedding CR/LF characters in WPA fields. Attackers can place newlines in wpa.identity, wpa.passphrase, or RADIUS shared secrets to append arbitrary wpa_supplicant or hostapd directives loaded by root-run daemons.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• abraxaslabs.tech/research/opnsense-wlan-wpa-line
• github.com/opnsense/core
• github.com/opnsense/core/blob/26.7.7/src/etc/inc/interfaces.inc
• github.com/opnsense/core/blob/26.7.7/src/opnsense/mvc/app/models/OPNsense/Interfaces/Wl…
• github.com/opnsense/core/commit/3bbd714b4c4b60f164e2e908501f208d3eadf645
• github.com/opnsense/core/commit/9f1eac0f9bdf705766ab61f9d62b9d55757fd0da
• www.vulncheck.com/advisories/opnsense-before-26.7.8-wireless-wpa-configuration-line-inj…