#VU28176 Code Injection in XWiki platform - CVE-2020-11057

Vulnerability identifier: #VU28176

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11057

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
XWiki platform
Web applications / CMS

Vendor: XWiki

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 11.3.7, 11.10.3, 12.0, 11.3.7

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

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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.