CVE-2020-28463: Server-side Request Forgery (SSRF) via img tags in reportlab

CVE-2020-28463 · Severity: low · CVSS 3.1 · Published 2021-02-18

All versions of package reportlab 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

Technologies: reportlab (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2020-28463 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-28463 being exploited in the wild.
How severe is CVE-2020-28463?
Low severity, with a CVSS score of 3.1, published 18 February 2021.
Which products and versions are affected?
reportlab (PyPI) ECOSYSTEM:introduced=0,fixed=3.5.55.
Is there a fix for CVE-2020-28463?
Yes. reportlab (PyPI): upgrade to 3.5.55 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-28463?
Check whether you run reportlab (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • reportlab (PyPI): upgrade to 3.5.55 or later
    pip install "reportlab>=3.5.55"

Affected products

  • reportlab (PyPI) ECOSYSTEM:introduced=0,fixed=3.5.55

Identifiers

  • CVE-2020-28463
  • GHSA-mpvw-25mg-59vx
  • PYSEC-2021-146

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