Allows large characters in change password in athou/commafeed

Valid

Reported on

Jul 5th 2022


Description

The commafeedapplication allows large characters to insert in the input field "password" at password change feature which can allow attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

Proof of Concept

1. Login and go to profile
2. Go to password change feature 
3. Fill your current password, fill the "Password" and "Password (agian)" input field with huge characters (more than 1 lakh)
4. Click "Change password"
You will see the application accepts large characters. If we increase the characters then it can lead to Dos.

Payload

You can get the large character at there (you can increase more) https://drive.google.com/file/d/1Q_optB_MfI7byzpS7SB8kPeVNc2DebwT/view?usp=sharing

Impact

This weakness will generally lead to undefined behavior and therefore crashes. Such as DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Instability

We are processing your report and will contact the athou/commafeed team within 24 hours. a month ago
Jérémie Panzer modified the Severity from Critical to Low 21 days ago
The researcher has received a minor penalty to their credibility for miscalculating the severity: -1
Jérémie Panzer validated this vulnerability 21 days ago
saharshtapi has been awarded the disclosure bounty
The fix bounty is now up for grabs
The researcher's credibility has increased: +7
Jérémie Panzer confirmed that a fix has been merged on 899a8d 21 days ago
The fix bounty has been dropped
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