CVE-2015-2295

published 2015-04-10

CVE-2015-2295: Cross-site request forgery (CSRF) vulnerability in system_firmware_restorefullbackup.php in the WebGUI in pfSense before 2.2.1 allows remote attackers to…

Priority P3 58 medium 6.8 CVSS 2.0

AV N AC M Au N C P I P A P

EXPLOIT

Cross-site request forgery (CSRF) vulnerability in system_firmware_restorefullbackup.php in the WebGUI in pfSense before 2.2.1 allows remote attackers to hijack the authentication of administrators for requests that delete arbitrary files via the deletefile parameter.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
netgate	pfsense	<= 2.2	—

Detection & IOCs extracted from sources · hover to see the quote

path /system_firmware_restorefullbackup.php↗

url https://[host]/system_firmware_restorefullbackup.php?deletefile=../etc/passwd↗

• → Monitor HTTP GET requests to /system_firmware_restorefullbackup.php containing the 'deletefile' parameter, especially with path traversal sequences (e.g., '../') indicating arbitrary file deletion attempts. ↗
• → Alert on unauthenticated or cross-origin POST/GET requests to /system_firmware_restorefullbackup.php, as the vulnerability stems from missing HTTP request origin validation enabling CSRF-driven file deletion with root privileges. ↗

• · The CSRF exploit requires the administrator to be authenticated and tricked into visiting a malicious page; the attack vector is network-based but requires social engineering of a logged-in admin session. ↗

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