Ubuntu Security Notice USN-5152-1
November 18, 2021
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.10
Several security issues were fixed in Thunderbird.
- thunderbird: Mozilla Open Source mail and newsgroup client
Multiple security issues were discovered in Thunderbird. If a
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
bypass security restrictions, spoof the UI, confuse the user, conduct
phishing attacks, or execute arbitrary code.
The problem can be corrected by updating your system to the
After a standard system update you need to restart Thunderbird
all the necessary changes.
CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507,