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USN-2973-1: Thunderbird vulnerabilities

19 May 2016

Several security issues were fixed in Thunderbird.

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Releases

Packages

  • thunderbird - Mozilla Open Source mail and newsgroup client

Details

Christian Holler, Tyson Smith, and Phil Ringalda discovered multiple
memory safety issues in Thunderbird. If a user were tricked in to opening
a specially crafted message, an attacker could potentially exploit these
to cause a denial of service via application crash, or execute arbitrary
code. (CVE-2016-2805, CVE-2016-2807)

Hanno Böck discovered that calculations with mp_div and mp_exptmod in NSS
produce incorrect results in some circumstances, resulting in
cryptographic weaknesses. (CVE-2016-1938)

A use-after-free was discovered in ssl3_HandleECDHServerKeyExchange in
NSS. A remote attacker could potentially exploit this to cause a denial of
service via application crash, or execute arbitrary code. (CVE-2016-1978)

A use-after-free was discovered in PK11_ImportDERPrivateKeyInfoAndReturnKey
in NSS. A remote attacker could potentially exploit this to cause a denial
of service via application crash, or execute arbitrary code.
(CVE-2016-1979)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04
Ubuntu 15.10
Ubuntu 14.04
Ubuntu 12.04

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

Related notices

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