LifeSize Room Vulnerabilities

Risk: Medium
Local: No
Remote: Yes
CWE: CWE-287

Ogólna skala CVSS: 5/10
Znaczenie: 2.9/10
Łatwość wykorzystania: 10/10
Wymagany dostęp: Zdalny
Złożoność ataku: Niska
Autoryzacja: Nie wymagana
Wpływ na poufność: Brak
Wpływ na integralność: Częściowy
Wpływ na dostępność: Brak

Discovered: 07-13-11 By: Spencer McIntyre (zeroSteiner) SecureState R&D Team Background: ----------- Multiple vulnerabilities within the LifeSize Room appliance. Vulnerability Summaries: ------------------------ Login page can be bypassed, granting administrative access to the web interface. Unauthenticated OS command injection is possible through the web interface. The easiest way to perform these attacks is using a web proxy. Vulnerable Versions: -------------------- Tested on LifeSize Room versions 3.5.3 and 4.7.18, others may be vulnerable. Authentication By Pass: ----------------------- Following the request to /gateway.php that references the LSRoom_Remoting.authenticate function, modify the AMF data in the response from the server to change "false" to "true" Example: Original False AMF: "\x0d\x0a\x0d\x0a\x00\x00\x00\x00\x00\x01\x00\x0c\x2f\x35\x37\x2f\x6f\x6 e\x52\x65\x73\x75\x6c\x74\x00\x04\x6e\x75\x6c\x6c\x00\x00\x00\x02\x01\x0 0" Modified True AMF: "\x0d\x0a\x0d\x0a\x00\x00\x00\x00\x00\x01\x00\x0c\x2f\x35\x37\x2f\x6f\x6 e\x52\x65\x73\x75\x6c\x74\x00\x04\x6e\x75\x6c\x6c\xff\xff\xff\xff\x01\x0 1" Command Injection: ------------------ The request to /gateway.php references a vulnerable function LSRoom_Remoting.doCommand within the encoded AMF data. The original parameter for the vulnerable function is "pref -l /var/system/upgrade/status" Replace this part with the command to be executed. Authentication to the web application is not necessary however a valid PHP session ID must be passed within the request. References: ----------- CVE-2011-2762 - authentication bypass CVE-2011-2763 - OS command injection


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