CVE-2020-6794 Information disclosure in Thunderbird
Attackers can access unencrypted stored passwords if a master password was set after upgrading from pre-60 versions, exposing sensitive credentials.
- 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
- Available
What is CVE-2020-6794?
CVE-2020-6794 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 2 Mar 2020. 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
If a user saved passwords before Thunderbird 60 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Thunderbird 60. The new master password is added only on the new file. This could allow the exposure of stored password data outside of user expectations. This vulnerability affects Thunderbird < 68.5.
Which versions are affected by CVE-2020-6794?
It affects 2 products.
Products include Canonical Ubuntu Linux, Mozilla Thunderbird.
How do I fix CVE-2020-6794?
Upgrade to a fixed version.
Is CVE-2020-6794 being exploited?
There is no known exploitation of CVE-2020-6794 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2020-6794, GHSA-2v3r-qqr5-3x33, UBUNTU-CVE-2020-6794.