CVE-2023-46743 The same file cannot be opened with different rights
Users with view-only rights can edit documents if another user previously opened them in edit mode, due to cached write permissions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-46743?
CVE-2023-46743 is a high-severity missing authorization vulnerability in xwikisas application-collabora, published on 9 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
application-collabora is an integration of Collabora Online in XWiki. As part of the application use cases, depending on the rights that a user has over a document, they should be able to open the office attachments files in view or edit mode. Currently, if a user opens an attachment file in edit mode in collabora, this right will be preserved for all future users, until the editing session is closes, even if some of them have only view right. Collabora server is the one issuing this request and it seems that the `userCanWrite` query parameter is cached, even if, for example, token is not. This issue has been patched in version 1.3.
Weakness: CWE-276
Which versions are affected by CVE-2023-46743?
It affects 1 product.
Products include Xwiki Application-Collabora.
How do I fix CVE-2023-46743?
No fix has been published for CVE-2023-46743 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-46743 being exploited?
There is no known exploitation of CVE-2023-46743 in the wild and no public exploit code.
Sources
Also known as GHSA-mvq3-xxg2-rj57.