Stored XSS in ViewVC

1) Stored cross-site scripting

EUVDB-ID: #VU70667

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-22456

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 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: 1.0.0 - 1.2.1

CPE2.3

• cpe:2.3:a:viewvc:viewvc:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:viewvc:viewvc:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:viewvc:viewvc:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:viewvc:viewvc:1.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:viewvc:viewvc:1.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:viewvc:viewvc:1.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:viewvc:viewvc:1.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:viewvc:viewvc:1.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:viewvc:viewvc:1.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:viewvc:viewvc:1.0.9:*:*:*:*:*:*:*

External links

https://github.com/viewvc/viewvc/security/advisories/GHSA-j4mx-f97j-gc5g

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.