10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
8.7 High
AI Score
Confidence
High
0.82 High
EPSS
Percentile
98.4%
XWiki is vulnerable to a remote code execution (RCE) attack through its user registration feature. This issue allows an attacker to execute arbitrary code by crafting malicious payloads in the “first name” or “last name” fields during user registration. This impacts all installations that have user registration enabled for guests.
To reproduce, register with any username and password and the following payload as “first name”: ]]{{/html}}{{async}}{{groovy}}services.logging.getLogger("attacker").error("Attack succeeded){{/groovy}}{{/async}}
. In the following page that confirms the success of the registration, the full first name should be displayed, linking to the created user. If the formatting is broken and a log message with content “ERROR attacker - Attack succeeded!” is logged, the attack succeeded.
This vulnerability has been patched in XWiki 14.10.17, 15.5.3 and 15.8 RC1.
In the administration of your wiki, under “Users & Rights” > “Registration” set the “Registration Successful Message” to the following code:
#set($message = $services.localization.render('core.register.successful', 'xwiki/2.1', ['USERLINK', $userName]))
#set($userLink = $xwiki.getUserName("$userSpace$userName"))
{{info}}$message.replace('USERLINK', "{{html clean=false}}$userLink{{/html}}"){{/info}}
github.com/advisories/GHSA-rj7p-xjv7-7229
github.com/xwiki/xwiki-platform/commit/b290bfd573c6f7db6cc15a88dd4111d9fcad0d31
github.com/xwiki/xwiki-platform/commit/cdf5be8c20b6b6fe6b9b56a6557561007859655f
github.com/xwiki/xwiki-platform/commit/ec608f303913f5e8af061f2a98506f49d69be60f
github.com/xwiki/xwiki-platform/security/advisories/GHSA-rj7p-xjv7-7229
jira.xwiki.org/browse/XWIKI-21173
nvd.nist.gov/vuln/detail/CVE-2024-21650
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
8.7 High
AI Score
Confidence
High
0.82 High
EPSS
Percentile
98.4%