CVE-2020-15646 Information disclosure in Thunderbird
An attacker intercepting Thunderbird's autodiscovery can steal user credentials by directing the client to a malicious server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-15646?
CVE-2020-15646 is a medium-severity vulnerability in Mozilla Thunderbird, published on 8 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
If an attacker intercepts Thunderbird's initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker. This vulnerability affects Thunderbird < 68.10.0.
Which versions are affected by CVE-2020-15646?
It affects 1 product.
Products include Mozilla Thunderbird.
How do I fix CVE-2020-15646?
Upgrade to a fixed version.
Is CVE-2020-15646 being exploited?
There is no known exploitation of CVE-2020-15646 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Thunderbird
Sources
Also known as DEBIAN-CVE-2020-15646, GHSA-4w45-xx62-4547, UBUNTU-CVE-2020-15646.