CVE-2020-12397 Other in Thunderbird
Attackers can spoof sender email addresses in Thunderbird by encoding Unicode whitespace in the From header, misleading users about the message origin.
- 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-2020-12397?
CVE-2020-12397 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 22 May 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
By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays. This vulnerability affects Thunderbird < 68.8.0.
Weakness: CWE-346
Which versions are affected by CVE-2020-12397?
It affects 2 products.
Products include Canonical Ubuntu Linux, Mozilla Thunderbird.
How do I fix CVE-2020-12397?
Upgrade to a fixed version.
Is CVE-2020-12397 being exploited?
There is no known exploitation of CVE-2020-12397 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2020-12397, GHSA-mg46-fgw7-xxfg, UBUNTU-CVE-2020-12397.