Vulnerability · Published Jun 6, 2023 · Assigned by GitHub_M
CVE-2023-33977Stored cross site scripting (XSS) via unrestricted file upload in Kiwi TCMS
High 8.1
In plain English
A high-severity cross-site scripting in Kiwi from kiwitcms. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
Kiwi TCMS is an open source test management system for both manual and automated testing. Kiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced upload validators in order to prevent potentially dangerous files from being uploaded and Content-Security-Policy definition to prevent cross-site-scripting attacks. The upload validation checks were not 100% robust which left the possibility to circumvent them and upload a potentially dangerous file which allows execution of arbitrary JavaScript in the browser. Additionally we've discovered that Nginx's `proxy_pass` directive will strip some headers negating protections built into Kiwi TCMS when served behind a reverse proxy. This issue has been addressed in version 12.4. Users are advised to upgrade. Users unable to upgrade who are serving Kiwi TCMS behind a reverse proxy should make sure that additional header values are still passed to the client browser. If they aren't redefining them inside the proxy configuration.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | kiwitcms | 12.4 | GHSA-2fqm-m4r2-fh98 |
| PyPI | kiwitcms | 12.4 | PYSEC-2026-1495 |
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
References
- https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98 x_refsource_CONFIRM
- https://github.com/kiwitcms/Kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034 x_refsource_MISC
- https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68 x_refsource_MISC
- https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87 x_refsource_MISC
- https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96/ x_refsource_MISC