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Ubuntu Security Notice USN-4647-1
November 25, 2020
thunderbird vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.10
Summary:
Several security issues were fixed in Thunderbird.
Software Description:
– thunderbird: Mozilla Open Source mail and newsgroup client
Details:
Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information across origins, bypass security restrictions,
conduct phishing attacks, conduct cross-site scripting (XSS) attacks,
bypass Content Security Policy (CSP) restrictions, conduct DNS rebinding
attacks, or execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.10:
thunderbird 1:78.5.0+build3-0ubuntu0.20.10.1
After a standard system update you need to restart Thunderbird to make
all the necessary changes.
References:
https://usn.ubuntu.com/4647-1
CVE-2020-15683, CVE-2020-15969, CVE-2020-16012, CVE-2020-26950,
CVE-2020-26951, CVE-2020-26953, CVE-2020-26956, CVE-2020-26958,
CVE-2020-26959, CVE-2020-26960, CVE-2020-26961, CVE-2020-26965,
CVE-2020-26968
Package Information:
https://launchpad.net/ubuntu/+source/thunderbird/1:78.5.0+build3-0ubuntu0.20.10.1
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