CVE-2006-5768

Think of this like a mail slot in your front door that, if left unlocked (an old setting called register_globals), lets a stranger slip in instructions that your house staff (the server) will obediently follow — including commands that hand over control of the house. If that slot is locked (the setting is off, as on most modern systems), the attack simply doesn't work.

This matters to you if you are running the Cyberfolio content/document management application, version 2.0 RC1 or earlier. It only puts you at risk if your server still has the outdated PHP register_globals setting turned on — most current hosting environments have this disabled by default, which blocks the attack entirely.

There's no evidence this is currently being exploited in the wild, and it isn't on any government list of actively attacked vulnerabilities, but attack tools for it already exist publicly, so it could be used against vulnerable, exposed servers. Given the age of the software and the fact that it only works under a specific, now-uncommon server setting, treat this as worth checking and fixing soon rather than an active emergency.

1. Confirm the Cyberfolio version in use (2.0 RC1 or earlier is affected). 2) Check php.ini or phpinfo() output for register_globals; if set to On, change it to Off and restart PHP/web server — this is the primary mitigating control and fully blocks these specific RFI vectors. 3) No official vendor patch exists for this vulnerability; the referenced advisories (echo.or.id, Secunia 22721) document the issue but do not provide a fixed Cyberfolio release. 4) If register_globals must remain on for other legacy reasons, consider placing the Cyberfolio instance behind a WAF rule blocking external URLs in the 'av' parameter for msg/view.php, msg/inc_message.php, msg/inc_envoi.php, and admin/incl_voir_compet.php, or restrict network access to the application. 5) Given the application's age (circa 2006) and lack of vendor support, evaluate migrating to a maintained alternative. 6) Monitor for unusual outbound requests from the web server and unexpected PHP files being written, which would indicate successful remote file inclusion.

CVSS 7.5 (High) reflects network-exploitable, no-authentication-required code execution with partial impact to confidentiality, integrity, and availability. Weakness type is PHP Remote File Inclusion (classic register_globals-dependent RFI, CWE-Other in NVD). Four public exploits are known, indicating low exploitation difficulty for anyone finding a vulnerable, exposed instance. EPSS places this in a high percentile with a rising trend, suggesting increased scanning/exploitation interest, though this is a prediction, not confirmed in-the-wild activity — it is not listed in CISA KEV and no dated news confirms active exploitation. Exploit maturity is best characterized as 'functional PoC' rather than 'weaponized at scale.' The root precondition (register_globals=On) is disabled by default in PHP since version 4.2.0 and removed entirely in PHP 5.4+, meaning modern PHP installations are inherently not exploitable via this vector regardless of patch status.