Vulnerability Report

CVE-2023-29528

Title: Xwiki Commons Cross-Site Scripting (XSS)

Cross-Site Scripting (XSS)

Proof Of Concept

PoC Available for CVE-2023-29528

CWE Category CWE-79
Published Date Apr 20, 2023
Modified Date Nov 21, 2024
Exploit Status Available
Score 9.0 CVSS v3.1
Exploit Probability (EPSS)
1.28%

Vulnerability Summary

CVE-2023-29528: XWiki Commons are technical libraries common to several other top level XWiki projects. The "restricted" mode of the HTML cleaner in XWiki, introduced in version 4.2-milestone-1 and massively improved in version 14.6-rc-1, allowed the injection of arbitrary HTML code and thus cross-site scripting via invalid HTML comments. As a consequence, any code relying on this "restricted" mode for security is vulnerable to JavaScript injection ("cross-site scripting"/XSS). When a privileged user with programming rights visits such a comment in XWiki, the malicious JavaScript code is executed in the context of the user session. This allows server-side code execution with programming rights, impacting the confidentiality, integrity and availability of the XWiki instance. This problem has been patched in XWiki 14.10, HTML comments are now removed in restricted mode and a check has been introduced that ensures that comments don't start with `>`. There are no known workarounds apart from upgrading to a version including the fix.

Impacted Vendors

F
fedoraproject 1
X
xwiki 1

Reference Links

https://github.com/xwiki/xwiki-commons/commit/8ff1a9d7e5d7b45b690134a537d53dc05cae04ab https://github.com/xwiki/xwiki-commons/security/advisories/GHSA-x37v-36wv-6v6h https://jira.xwiki.org/browse/XCOMMONS-2568 https://jira.xwiki.org/browse/XWIKI-20348 https://github.com/xwiki/xwiki-commons/commit/8ff1a9d7e5d7b45b690134a537d53dc05cae04ab https://github.com/xwiki/xwiki-commons/security/advisories/GHSA-x37v-36wv-6v6h https://jira.xwiki.org/browse/XCOMMONS-2568 https://jira.xwiki.org/browse/XWIKI-20348
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.0
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.0
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-29528 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/shoucheng3/xwiki__xwiki-commons_CVE-2023-29528_14-9-rc-1
View Code
MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected Stack

No specific products linked.