Ubuntu Security Notice 2973-1 - 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. Hanno Boeck discovered that calculations with mp_div and mp_exptmod in NSS produce incorrect results in some circumstances, resulting in cryptographic weaknesses. Various other issues were also addressed.
d29c52273e7734f2eb886a43b5407681e67a0595f44c88105e13d3a3a39ba876
From: Chris Coulson <chris.coulson@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <8776aa54-7963-23bd-3782-34ec8122005f@canonical.com>
Subject: [USN-2973-1] Thunderbird vulnerabilities
============================================================================
Ubuntu Security Notice USN-2973-1
May 19, 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 B=C3=B6ck 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 versions:
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
After a standard system update you need to restart Thunderbird to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2973-1
CVE-2016-1938, CVE-2016-1978, CVE-2016-1979, CVE-2016-2805,
CVE-2016-2807
Package Information:
https://launchpad.net/ubuntu/+source/thunderbird/1:38.8.0+build1-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/thunderbird/1:38.8.0+build1-0ubuntu0.15.10.1
https://launchpad.net/ubuntu/+source/thunderbird/1:38.8.0+build1-0ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/thunderbird/1:38.8.0+build1-0ubuntu0.12.04.1
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