CVE-2022-23602

Public Exploit
Nim's rst parser sandboxed mode allows include which can embed any local file

Description

Nimforum is a lightweight alternative to Discourse written in Nim. In versions prior to 2.2.0 any forum user can create a new thread/post with an include referencing a file local to the host operating system. Nimforum will render the file if able. This can also be done silently by using NimForum's post "preview" endpoint. Even if NimForum is running as a non-critical user, the forum.json secrets can be stolen. Version 2.2.0 of NimForum includes patches for this vulnerability. Users are advised to upgrade as soon as is possible. There are no known workarounds for this issue.

Category

7.7
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.37%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/nim-lang/nimforum/security/advisories/GHSA-q3vh-x957-wr75 exploit third party advisory patch
https://github.com/nim-lang/Nim/commit/cb894c7094fb49014f85815a9dafc38b5dda743e third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-23602?
CVE-2022-23602 has been scored as a high severity vulnerability.
How to fix CVE-2022-23602?
To fix CVE-2022-23602, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-23602 being actively exploited in the wild?
It is possible that CVE-2022-23602 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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