CVE-2024-23330 Tuta loads images from external resources
Tuta loads external images automatically despite settings, exposing user IP and device info to senders.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-23330?
CVE-2024-23330 is a medium-severity server-side request forgery vulnerability in tutao tutanota, published on 23 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Tuta is an encrypted email service. In versions prior to 119.10, an attacker can attach an image in a html mail which is loaded from external resource in the default setting, which should prevent loading of external resources. When displaying emails containing external content, they should be loaded by default only after confirmation by the user. However, it could be recognized that certain embedded images (see PoC) are loaded, even though the "Automatic Reloading of Images" function is disabled by default. The reloading is also done unencrypted via HTTP and redirections are followed. This behavior is unexpected for the user, since the user assumes that external content will only be loaded after explicit manual confirmation. The loading of external content in e-mails represents a risk, because this makes the sender aware that the e-mail address is used, when the e-mail was read, which device is used and expose the user's IP address. Version 119.10 contains a patch for this issue.
Weakness: CWE-918
Which versions are affected by CVE-2024-23330?
It affects 1 product.
Products include Tuta Tutanota.
How do I fix CVE-2024-23330?
No fix has been published for CVE-2024-23330 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2024-23330 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23330 exists.