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GHSA-cgr4-c233-h733high7.3

UnoPim Stored XSS : Cookie hijacking through Create User function

Impact

A vulnerability exists in the Create User process, allowing the creation of a new admin account with an option to upload a profile image. An attacker can upload a malicious SVG file containing an embedded script. When the profile image is accessed, the embedded script executes, leading to the potential theft of session cookies.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

unopim/unopim Packagist
Affected rangeRecorded fix
Earlier releases before 0.1.5Ecosystem versions0.1.5

Version evidence: OSV · GHSA-cgr4-c233-h733

View original version evidence (5 explicit versions)

Original source description

Summary

A vulnerability exists in the Create User process, allowing the creation of a new admin account with an option to upload a profile image. An attacker can upload a malicious SVG file containing an embedded script. When the profile image is accessed, the embedded script executes, leading to the potential theft of session cookies.

Details

  1. Login as admin
  2. Go to Create User
  3. Fill up everything in the registration form then upload SVG image as a profile picture
  4. In SVG image, add script tag to prepare for XSS attack
  5. Complete the Create User process
  6. Right click at the image to obtain image URL address
  7. XSS triggered

PoC

The below link is a private YouTube video for PoC. https://youtu.be/5j8owD0--1A

Impact

The stored XSS can lead to session hijacking and privilege escalation, effectively bypassing any CSRF protections in place.

References