GHSA-mpvw-25mg-59vx
Server-side Request Forgery (SSRF) via img tags in reportlab
Packages
Details
As written in the advisory (Markdown source, shown as plain text).
All versions of package reportlab at time of writing 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
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2020-28463
- https://bugzilla.redhat.com/show_bug.cgi?id=1930417
- https://github.com/advisories/GHSA-mpvw-25mg-59vx
- https://github.com/pypa/advisory-database/tree/main/vulns/reportlab/PYSEC-2021-146.yaml
- https://hg.reportlab.com/hg-public/reportlab
- https://hg.reportlab.com/hg-public/reportlab/file/f094d273903a/CHANGES.md#l71
- https://hg.reportlab.com/hg-public/reportlab/rev/7f2231703dc7
- https://lists.debian.org/debian-lts-announce/2023/09/msg00037.html
- https://lists.fedoraproject.org/archives/list/[email protected]/message/HMUJA5GZTPQ5WRYUCCK2GEZM4W43N7HH
- https://lists.fedoraproject.org/archives/list/[email protected]/message/YZQSFCID67K6BTC655EQY6MNOF35QI44
- https://snyk.io/vuln/SNYK-PYTHON-REPORTLAB-1022145
- https://www.reportlab.com/docs/reportlab-userguide.pdf