Remote code execution in XWiki Platform



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-21379
CWE-ID CWE-94
Exploitation vector Network
Public exploit N/A
Vulnerable software
 XWiki platform
Web applications / CMS

Vendor XWiki

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Code Injection

EUVDB-ID: #VU51504

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-21379

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 in the "{{wikimacrocontent}}". A remote attacker can send a specially crafted request and execute arbitrary code on the target system.

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: 11.4 rc-1 - 12.7.1

CPE2.3 External links

https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-v662-xpcc-9xf6
https://jira.xwiki.org/browse/XWIKI-17759


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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