N/A - USN-3436-1

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 17.04 - 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-like context, an attacker could potentially exploit these to read uninitialized memory, bypass phishing and malware protection, conduct cross-site scripting (XSS) attacks, cause a denial of service via application crash, or execute arbitrary code. (CVE-2017-7793, CVE-2017-7810, CVE-2017-7814, CVE-2017-7818, CVE-2017-7819, CVE-2017-7823, CVE-2017-7824)

Martin Thomson discovered that NSS incorrectly generated handshake hashes. A remote attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2017-7805)

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.04:
thunderbird 1:52.4.0+build1-0ubuntu0.17.04.2

Ubuntu 16.04 LTS:
thunderbird 1:52.4.0+build1-0ubuntu0.16.04.2

Ubuntu 14.04 LTS:
thunderbird 1:52.4.0+build1-0ubuntu0.14.04.2

After a standard system update you need to restart Thunderbird to make all the necessary changes.

References:
https://www.ubuntu.com/usn/usn-3436-1
CVE-2017-7793, CVE-2017-7805, CVE-2017-7810, CVE-2017-7814,
CVE-2017-7818, CVE-2017-7819, CVE-2017-7823, CVE-2017-7824

Package Information:

https://launchpad.net/ubuntu/+source/thunderbird/1:52.4.0+build1-0ubuntu0.17.04.2

https://launchpad.net/ubuntu/+source/thunderbird/1:52.4.0+build1-0ubuntu0.16.04.2

https://launchpad.net/ubuntu/+source/thunderbird/1:52.4.0+build1-0ubuntu0.14.04.2