Joomla AcySMS 3.5.0 CSV Macro Injection

Joomla AcySMS component version 3.5.0 suffers from a CSV macro injection vulnerability.


MD5 | d009e307c702b2cfb15a5336b4c202e0

# Exploit Title: Joomla! Component AcySMS 3.5.0 CSV Macro Injection
# Google Dork: N/A
# Date: 22-03-2018
################################
# Exploit Author: Sureshbabu Narvaneni
################################
# Vendor Homepage: https://www.acyba.com
# Software Link: https://extensions.joomla.org/extensions/extension/communication/phone-a-sms/acysms/
# Affected Version: 3.5.0
# Category: WebApps
# Tested on: Ubuntu 14.04 x86_64/Kali Linux 4.12 i686
# CVE : CVE-2018-9106

1. Vendor Description:

AcySMS is a component which enables you to send follow-up campaigns,
auto-responders, newsletters, promotions, special offers, automated
messages... via SMS/Text Messages.

2. Technical Description:

CSV Injection (aka Excel Macro Injection or Formula Injection) exists in
the export feature in the Acyba AcySMS extension before 3.5.1 for Joomla!
via a value that is mishandled in a CSV export.

3. Proof Of Concept:

Login as low privileged user who is having access to AcySMS Component.
Rename user name as @SUM(1+1)*cmd|' /C calc'!A0.

When high privileged user logged in and exported user data then the CSV
Formula gets executed and calculator will get popped in his machine.

4. Solution:

Upgrade to version 3.5.1
https://extensions.joomla.org/extensions/extension/communication/phone-a-sms/acysms/


5. Reference:

https://vel.joomla.org/articles/2140-introducing-csv-injection
https://github.com/MrR3boot/CVE-Hunting/blob/master/AcySMS-CSV.mp4



Sureshbabu Narvaneni,
Security Analyst | Bug Hunter,
HackerOne (mrreboot/mrr3boot) | BugCrowd (Mr_R3boot)



Related Posts

Comments