========================================================================== Ubuntu Security Notice USN-3714-1 July 12, 2018 thunderbird vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 17.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS 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, bypass CORS restrictions, obtain sensitive information, or execute arbitrary code. (CVE-2018-12359, CVE-2018-12360, CVE-2018-12362, CVE-2018-12363, CVE-2018-12364, CVE-2018-12365, CVE-2018-12366) It was discovered that S/MIME and PGP decryption oracles can be built with HTML emails. An attacker could potentially exploit this to obtain sensitive information. (CVE-2018-12372) It was discovered that S/MIME plaintext can be leaked through HTML reply/forward. An attacker could potentially exploit this to obtain sensitive information. (CVE-2018-12373) It was discovered that forms can be used to exfiltrate encrypted mail parts by pressing enter in a form field. An attacker could potentially exploit this to obtain sensitive information. (CVE-2018-12374) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: thunderbird 1:52.9.1+build3-0ubuntu0.18.04.1 Ubuntu 17.10: thunderbird 1:52.9.1+build3-0ubuntu0.17.10.1 Ubuntu 16.04 LTS: thunderbird 1:52.9.1+build3-0ubuntu0.16.04.1 Ubuntu 14.04 LTS: thunderbird 1:52.9.1+build3-0ubuntu0.14.04.1 After a standard system update you need to restart Thunderbird to make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3714-1 CVE-2018-12359, CVE-2018-12360, CVE-2018-12362, CVE-2018-12363, CVE-2018-12364, CVE-2018-12365, CVE-2018-12366, CVE-2018-12372, CVE-2018-12373, CVE-2018-12374, CVE-2018-5188 Package Information: https://launchpad.net/ubuntu/+source/thunderbird/1:52.9.1+build3-0ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/thunderbird/1:52.9.1+build3-0ubuntu0.17.10.1 https://launchpad.net/ubuntu/+source/thunderbird/1:52.9.1+build3-0ubuntu0.16.04.1 https://launchpad.net/ubuntu/+source/thunderbird/1:52.9.1+build3-0ubuntu0.14.04.1