Remote code execution in XWiki platform

1) Code Injection

EUVDB-ID: #VU28176

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-11057

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote authenticated attacker can execute python/groovy scripts while editing personal dashboards.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

XWiki platform: before 12.0

External links

http://github.com/xwiki/xwiki-platform/security/advisories/GHSA-rmp6-jjg8-9424
http://jira.xwiki.org/browse/XWIKI-16960
http://medium.com/@andrew.levkin/tews-4c47cfc011d1

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.