USN-2973-1: Thunderbird vulnerabilities

USN-2973-1: Thunderbird vulnerabilities

Ubuntu Security Notice USN-2973-1

18th May, 2016

thunderbird vulnerabilities

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

  • Ubuntu 16.04 LTS
  • Ubuntu 15.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS

Summary

Several security issues were fixed in Thunderbird.

Software description

  • 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)

Update instructions

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

Ubuntu 16.04 LTS:
thunderbird

1:38.8.0+build1-0ubuntu0.16.04.1
Ubuntu 15.10:
thunderbird

1:38.8.0+build1-0ubuntu0.15.10.1
Ubuntu 14.04 LTS:
thunderbird

1:38.8.0+build1-0ubuntu0.14.04.1
Ubuntu 12.04 LTS:
thunderbird

1:38.8.0+build1-0ubuntu0.12.04.1

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

CVE-2016-1938,

CVE-2016-1978,

CVE-2016-1979,

CVE-2016-2805,

CVE-2016-2807

Source: USN-2973-1: Thunderbird vulnerabilities

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