Server-side Request Forgery (SSRF)

Affecting reportlab package, versions [0,]

Report new vulnerabilities
Do your applications use this vulnerable package? Test your applications

Overview

reportlab is a Python library for generating PDFs and graphics.

Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via img tags. In order to reduce risk, use trustedSchemes & trustedHosts (see in Reportlab's documentation)

Steps to reproduce by Karan Bamal:

  1. Download and install the latest package of reportlab
  2. Go to demos -> odyssey -> dodyssey
  3. In the text file odyssey.txt that needs to be converted to pdf inject <img src="http://127.0.0.1:5000" valign="top"/>
  4. Create a nc listener nc -lp 5000
  5. Run python3 dodyssey.py
  6. You will get a hit on your nc showing we have successfully proceded to send a server side request
  7. dodyssey.py will show error since there is no img file on the url, but we are able to do SSRF

    Remediation

    There is no fixed version for reportlab.

    References

CVSS Score

6.5
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    None
  • Availability
    None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P
Credit
Karan Bamal
CVE
CVE-2020-28463
CWE
CWE-918
Snyk ID
SNYK-PYTHON-REPORTLAB-1022145
Disclosed
27 Oct, 2020
Published
03 Jan, 2021