VAR-201109-0091
Vulnerability from variot - Updated: 2023-12-18 12:10The web interface on the LifeSize Room appliance LS_RM1_3.5.3 (11) allows remote attackers to bypass authentication via unspecified data associated with a "true" authentication status, related to AMF data and the LSRoom_Remoting.authenticate function in gateway.php. LifeSize Room is a high definition video conferencing device. LifeSize Room is prone to a security-bypass vulnerability and a command-injection vulnerability. Exploiting these issues could allow an attacker to bypass authentication or execute arbitrary commands in the context of the application. LifeSize Room versions 3.5.3 and 4.7.18 are affected; other versions may also be vulnerable. Unauthenticated OS command injection is possible through the web interface. The easiest way to perform these attacks is using a web proxy.
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\x6e\x52\x65\x73\x75\x6c\x74\x00\x04\x6e\x75\x6c\x6c\x00\x00\x00\x02\x01\x00" Modified True AMF: "\x0d\x0a\x0d\x0a\x00\x00\x00\x00\x00\x01\x00\x0c\x2f\x35\x37\x2f\x6f\x6e\x52\x65\x73\x75\x6c\x74\x00\x04\x6e\x75\x6c\x6c\xff\xff\xff\xff\x01\x01"
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
Show details on source website{
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"data": "The web interface on the LifeSize Room appliance LS_RM1_3.5.3 (11) allows remote attackers to bypass authentication via unspecified data associated with a \"true\" authentication status, related to AMF data and the LSRoom_Remoting.authenticate function in gateway.php. LifeSize Room is a high definition video conferencing device. LifeSize Room is prone to a security-bypass vulnerability and a command-injection vulnerability. \nExploiting these issues could allow an attacker to bypass authentication or execute arbitrary commands in the context of the application. \nLifeSize Room versions 3.5.3 and 4.7.18 are affected; other versions may also be vulnerable. \nUnauthenticated OS command injection is possible through the web interface. \nThe easiest way to perform these attacks is using a web proxy. \n\n\nAuthentication By Pass:\n-----------------------\nFollowing the request to /gateway.php that references the LSRoom_Remoting.authenticate\nfunction, modify the AMF data in the response from the server to change \"false\" to \"true\"\nExample:\nOriginal False AMF: \"\\x0d\\x0a\\x0d\\x0a\\x00\\x00\\x00\\x00\\x00\\x01\\x00\\x0c\\x2f\\x35\\x37\\x2f\\x6f\\x6e\\x52\\x65\\x73\\x75\\x6c\\x74\\x00\\x04\\x6e\\x75\\x6c\\x6c\\x00\\x00\\x00\\x02\\x01\\x00\"\nModified True AMF: \"\\x0d\\x0a\\x0d\\x0a\\x00\\x00\\x00\\x00\\x00\\x01\\x00\\x0c\\x2f\\x35\\x37\\x2f\\x6f\\x6e\\x52\\x65\\x73\\x75\\x6c\\x74\\x00\\x04\\x6e\\x75\\x6c\\x6c\\xff\\xff\\xff\\xff\\x01\\x01\"\n\n\nCommand Injection:\n------------------\nThe request to /gateway.php references a vulnerable function LSRoom_Remoting.doCommand\nwithin the encoded AMF data. The original parameter for the vulnerable function is\n\"pref -l /var/system/upgrade/status\" Replace this part with the command to be executed. \nAuthentication to the web application is not necessary however a valid PHP session ID\nmust be passed within the request. \n\n\nReferences:\n-----------\nCVE-2011-2762 - authentication bypass\nCVE-2011-2763 - OS command injection\n",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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