AXON PBX 2.02 DLL Hijacking

Risk: Medium
Local: Yes
Remote: No
CWE: CWE-426

CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

Aloha, *Summary:* AXON PBX contains a DLL loading vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system. The vulnerability exists due to some DLL file is loaded by 'pbxsetup.exe' improperly. And it allows an attacker to load this DLL file of the attackeras choosing that could execute arbitrary code and gain elevated privileges without the user's knowledge. *CVE ID: *CVE-2018-11551 *Affected Product:* AXON PBX 2.02 (pbxsetup.exe) *Tested on:* Windows 7 (64-bit) *Impact:* Attacker can exploit this vulnerability to load a DLL file of the attacker's choosing that could execute arbitrary code. This may help attacker to successfully exploit the system if user creates shell as a DLL. *Vulnerability Scoring Details:* The vulnerability classification has been performed by using the CVSSv2 scoring system ( Base Score: 7.2 (AV:A/AC:L/Au:N/C:C/I:C/A:C) *Proof of concept/demonstration:* 1. Create a malicious 'PROPSYS.dll' file and save it in your "Downloads" directory. 2. Download 'pbxsetup.exe' from and save it in your "Downloads" directory. 3. Execute pbxsetup.exe from your "Downloads" directory. 4. Malicious dll file gets executed. *Reference:* *Credit:* Himanshu Mehta (@lionheartroxx) Chao!! Himanshu Mehta


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