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GHSA-8c52-x9w7-vc95
No affected components available
Summary
A user with no view rights on a page may see the content of an office attachment displayed with the view file macro.
Details
If on a public page is displayed an office attachment from a restricted page, a user with no view rights on the restricted page can view the attachment content, no matter the display type used.
PoC
- Install and activate the Pro Macros application
- Create a page and limit the view rights for a test user
- Add an attachment to the restricted page
- Create a new public page
- Add the view file macro and select the attachment from the restricted page using any display type
- Login as the test user with restricted view rights
- The user will see the content despite having no view rights
Workarounds
None
Impact
Private data can be leaked if a user knows the reference to an attachment and has edit rights on a page.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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