Vulnerability identifier: #VU70667

Vulnerability risk: Low

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22456

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ViewVC
Web applications / Modules and components for CMS

Vendor: ViewVC

Description

The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within the revision view changed paths. A remote user with commit privileges to a Subversion repository can permanetly inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ViewVC: 1.2.0 - 1.2.1, 1.1.0 - 1.1.28, 1.0.0 - 1.0.14

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External links
http://github.com/viewvc/viewvc/security/advisories/GHSA-j4mx-f97j-gc5g

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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