CVE-2011-4923 Cross-site scripting in n/a

Medium 4.3 Published 18 Feb 2012 Updated 7 Aug 2024

Remote attackers can inject arbitrary web script or HTML via the num parameter in the log file viewer, requiring user interaction to execute.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2011-4923?

CVE-2011-4923 is a medium-severity cross-site scripting vulnerability in n/a, published on 18 Feb 2012. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross-site scripting (XSS) vulnerability in View.pm in BackupPC 3.0.0, 3.1.0, 3.2.0, 3.2.1, and possibly earlier allows remote attackers to inject arbitrary web script or HTML via the num parameter in a view action to index.cgi, related to the log file viewer, a different vulnerability than CVE-2011-3361.

Weakness: CWE-79

Which versions are affected by CVE-2011-4923?

It affects 1 product.

Products include Backuppc Backuppc.

How do I fix CVE-2011-4923?

Upgrade to a fixed version.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2011-4923 being exploited?

There is no known exploitation of CVE-2011-4923 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2011-4923, GHSA-3cx2-p7rj-x3rq.