CVE-2021-32750 De-anonymization via message
An attacker can de-anonymize MuWire users by sending a message with an HTML image tag, causing the client to leak the user's IP address via clearnet.
- 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
- None listed
What is CVE-2021-32750?
CVE-2021-32750 is a medium-severity vulnerability in zlatinb muwire, published on 15 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
MuWire is a file publishing and networking tool that protects the identity of its users by using I2P technology. Users of MuWire desktop client prior to version 0.8.8 can be de-anonymized by an attacker who knows their full ID. An attacker could send a message with a subject line containing a URL with an HTML image tag and the MuWire client would try to fetch that image via clearnet, thus exposing the IP address of the user. The problem is fixed in MuWire 0.8.8. As a workaround, users can disable messaging functionality to prevent other users from sending them malicious messages.
Which versions are affected by CVE-2021-32750?
It affects 1 product.
Products include Muwire Project Muwire.
How do I fix CVE-2021-32750?
No fix has been published for CVE-2021-32750 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-32750 being exploited?
There is no known exploitation of CVE-2021-32750 in the wild and no public exploit code.
Sources
Also known as GHSA-68xh-9h7w-64qg.