Preemptive Protection against Nginx Request URI Verification Security Bypass (CVE-2013-4547)
|Check Point Reference:||CPAI-2013-3618|
|Source:||Nginx Advisory SA55757|
|Protection Provided by:||
Who is Vulnerable?
nginx HTTP Server 1.5.x prior to 1.5.7
nginx HTTP Server 1.x prior 1.4.4
A security bypass vulnerability has been reported in Nginx.
The vulnerability is caused by improper handling of unescaped space characters within URIs.A remote attacker can exploit this vulnerability to bypass security restrictions in certain configurations.
This protection will detect and block attempts to exploit this vulnerability.No update is required to address this vulnerability.Users are protected against this vulnerability if the Non-HTTP Traffic over HTTP Port protection found in the Protection section of CPAI-2012-118 has been applied.
To configure the defense, select your product from the list below and follow the related protection steps.
Security Gateway R75 / R71 / R70
How Can I Protect My Network?
- In the IPS tab, click Protections and find the Non-HTTP Traffic over HTTP Port protection using the Search tool and Edit the protection's settings.
- Install policy on all modules.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: Web Server Enforcement Violation
Attack Information: Non-HTTP Traffic over HTTP Port