Privilege escalation in XWiki Platform

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU72774

Risk: Medium

CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-26472

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to improper encoding or escaping of output by the async macro and IconThemeSheet from the user profile. A remote user can gain elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

XWiki platform: 6.2-milestone-1

External links

http://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vwr6-qp4q-2wj7
http://github.com/xwiki/xwiki-platform/commit/48caf7491595238af2b531026a614221d5d61f38#diff-2ec9d716673ee049937219cdb0a92e520f81da14ea84d144504b97ab2bdae243R45
http://jira.xwiki.org/browse/XWIKI-19731

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.