USN-3714-1: Thunderbird vulnerabilities

12 July 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

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References