CVE-2015-3440 Cross-site scripting in n/a
Remote attackers can inject arbitrary web script or HTML via long comments in WordPress, potentially leading to session hijacking or malicious actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2015-3440?
CVE-2015-3440 is a medium-severity cross-site scripting vulnerability in Debian Debian Linux, published on 3 Aug 2015. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Cross-site scripting (XSS) vulnerability in wp-includes/wp-db.php in WordPress before 4.2.1 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type.
Weakness: CWE-79
Which versions are affected by CVE-2015-3440?
It affects 2 products.
Products include Debian Debian Linux, Wordpress Wordpress.
How do I fix CVE-2015-3440?
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-2015-3440 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2015-3440 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2015-3440, GHSA-xg6f-394q-j4f9, MGASA-2015-0202.