Cross-site Scripting (XSS) - Stored in yetiforcecompany/yetiforcecrm

Valid

Reported on

Aug 17th 2022


Description

The application uses Purify to avoid the Cross Site Scripting attack. However, On ApiAddress module from Settings, the customFields is not validated and it's used directly without any encoding or validation on ApiConfigModal.tpl. It allows attacker to inject arbitrary Javascript code to perform an Stored XSS attack.

Proof of Concept

  1. 1- Login to the application
  2. 2- Access the ApiAddress Module via the following URL:
  3. https://gitstable.yetiforce.com/index.php?module=ApiAddress&parent=Settings&view=Configuration
  4. 3- Click to the button "Configure provider",
  5. Change the value of "map_url" parameter with the following payload:
https://www.attacker.com#"+onfocus="alert(document.domain)"+autofocus=""+"
  1. Or change the value of "country_codes" with the following payload:
"+onfocus="alert(document.domain)"+autofocus=""+"
  1. **Inject the payload
  2. Payload XSS

PoC Video

https://drive.google.com/file/d/1Bb_-s_2ELyR87vfkhVjb0U0VThb7eOzZ/view?usp=sharing

Vulnerable Code

  1. 1- The CustomFields is not validated and map_url allow special characters: NotValidation
  2. 2- The parameter is not encoded and use directly:
  3. NotEncoding

Impact

An XSS attack allows an attacker to execute arbitrary JavaScript in the context of the attacked website and the attacked user. This can be abused to steal session cookies, perform requests in the name of the victim or for phishing attacks.

We are processing your report and will contact the yetiforcecompany/yetiforcecrm team within 24 hours. a month ago
thanhlocpanda modified the report
a month ago
We have contacted a member of the yetiforcecompany/yetiforcecrm team and are waiting to hear back a month ago
Radosław Skrzypczak validated this vulnerability a month ago
thanhlocpanda has been awarded the disclosure bounty
The fix bounty is now up for grabs
The researcher's credibility has increased: +7
We have sent a fix follow up to the yetiforcecompany/yetiforcecrm team. We will try again in 7 days. a month ago
Radosław Skrzypczak confirmed that a fix has been merged on 2c14ba a month ago
The fix bounty has been dropped
ApiConfigModal.tpl#L18-L28 has been validated
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