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GHSA-j9h5-vcgv-2jfm
No affected components available
Impact
It's possible to execute javascript with the right of any user by leading him to a special URL on the wiki targeting a page which contains an attachment.
To reproduce:
- add an attachment to a page (for example, your user profile)
- add
?xpage=importinline&editor=%22%3E%3Cimg%20src%20onerror=alert(document.domain)%3Eto the page view URL as inhttps://myhost/xwiki/bin/view/XWiki/MyUser?xpage=importinline&editor=%22%3E%3Cimg%20src%20onerror=alert(document.domain)%3E
Patches
This has been patched in XWiki 15.0-rc-1, 14.10.4 and 14.4.8.
Workarounds
The easiest is to edit file <xwiki app>/templates/importinline.vm and apply the modification described on https://github.com/xwiki/xwiki-platform/commit/28905f7f518cc6f21ea61fe37e9e1ed97ef36f01
References
https://jira.xwiki.org/browse/XWIKI-20340 https://app.intigriti.com/company/submissions/e95a7ad5-7029-4627-abf0-3e3e3ea0b4ce/XWIKI-E93DFEYK
Attribution
This vulnerability has been reported on Intigriti by René de Sain @renniepak.
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. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very high. The vulnerability is very likely 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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