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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Ntyi44ObyzQv5MooiCikG9HthYb5MufMf Content-Type: multipart/mixed; boundary="l4136wYWkjkpucptG5kwYEf1L4iC8tYCk"; protected-headers="v1" From: Chris Coulson <chris.coulson@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: ubuntu-security-announce@lists.ubuntu.com Message-ID: <c2071c77-5b7d-7402-5c36-848b7b646c1c@canonical.com> Subject: [USN-4647-1] Thunderbird vulnerabilities
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========================================================================== Ubuntu Security Notice USN-4647-1 November 25, 2020
thunderbird vulnerabilities ==========================================================================
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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