CVE-2016-5124 Cross-site scripting in n/a
Attackers can execute malicious scripts in user sessions via drag-and-drop images, leading to session hijacking or unauthorized actions.
- 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
- None listed
What is CVE-2016-5124?
CVE-2016-5124 is a medium-severity cross-site scripting vulnerability in Open-Xchange Open-Xchange Appsuite, published on 15 Dec 2016. 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
An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev14. Adding images from external sources to HTML editors by drag&drop can potentially lead to script code execution in the context of the active user. To exploit this, a user needs to be tricked to use an image from a specially crafted website and add it to HTML editor areas of OX App Suite, for example E-Mail Compose or OX Text. This specific attack circumvents typical XSS filters and detection mechanisms since the code is not loaded from an external service but injected locally. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). To exploit this vulnerability, a attacker needs to convince a user to follow specific steps (social-engineering).
Weakness: CWE-79
Which versions are affected by CVE-2016-5124?
It affects 1 product.
Products include Open-Xchange Open-Xchange Appsuite.
How do I fix CVE-2016-5124?
No fix has been published for CVE-2016-5124 yet. Limit exposure of the affected software until one is available.
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-2016-5124 being exploited?
There is no known exploitation of CVE-2016-5124 in the wild and no public exploit code.
Other vulnerabilities in Open-Xchange Open-Xchange Appsuite
Sources
Also known as GHSA-xcmr-36f6-qgp2.