Stored XSS in ViewVC

1) Stored cross-site scripting

EUVDB-ID: #VU70698

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-2023-22464

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

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 in revision view changed path "copyfrom" locations. A remote user with commit privileges to a Subversion repository exposed by an otherwise trusted ViewVC instance can permanently 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: 1.0.0 - 1.2.2

External links

http://github.com/viewvc/viewvc/releases/tag/1.1.30
http://github.com/viewvc/viewvc/releases/tag/1.2.3
http://github.com/viewvc/viewvc/issues/311
http://github.com/viewvc/viewvc/security/advisories/GHSA-jvpj-293q-q53h

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.