Ubuntu Security Notice USN-2936-1

27th April, 2016

firefox 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

Firefox could be made to crash or run programs as your login if it
opened a malicious website.

Software description

• firefox
  – Mozilla Open Source web browser

Details

Christian Holler, Tyson Smith, Phil Ringalda, Gary Kwong, Jesse Ruderman,
Mats Palmgren, Carsten Book, Boris Zbarsky, David Bolter, Randell Jesup,
Andrew McCreight, and Steve Fink discovered multiple memory safety issues
in Firefox. If a user were tricked in to opening a specially crafted
website, an attacker could potentially exploit these to cause a denial of
service via application crash, or execute arbitrary code with the
privileges of the user invoking Firefox. (CVE-2016-2804, CVE-2016-2806,
CVE-2016-2807)

An invalid write was discovered when using the JavaScript .watch() method in
some circumstances. If a user were tricked in to opening a specially crafted
website, an attacker could potentially exploit this to cause a denial of
service via application crash, or execute arbitrary code with the
privileges of the user invoking Firefox. (CVE-2016-2808)

Looben Yang discovered a use-after-free and buffer overflow in service
workers. If a user were tricked in to opening a specially crafted website,
an attacker could potentially exploit these to cause a denial of service
via application crash, or execute arbitrary code with the privileges of
the user invoking Firefox. (CVE-2016-2811, CVE-2016-2812)

Sascha Just discovered a buffer overflow in libstagefright in some
circumstances. If a user were tricked in to opening a specially crafted
website, an attacker could potentially exploit this to cause a denial of
service via application crash, or execute arbitrary code with the
privileges of the user invoking Firefox. (CVE-2016-2814)

Muneaki Nishimura discovered that CSP is not applied correctly to web
content sent with the multipart/x-mixed-replace MIME type. An attacker
could potentially exploit this to conduct cross-site scripting (XSS)
attacks when they would otherwise be prevented. (CVE-2016-2816)

Muneaki Nishimura discovered that the chrome.tabs.update API for web
extensions allows for navigation to javascript: URLs. A malicious
extension could potentially exploit this to conduct cross-site scripting
(XSS) attacks. (CVE-2016-2817)

Mark Goodwin discovered that about:healthreport accepts certain events
from any content present in the remote-report iframe. If another
vulnerability allowed the injection of web content in the remote-report
iframe, an attacker could potentially exploit this to change the user’s
sharing preferences. (CVE-2016-2820)

Update instructions

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

Ubuntu 16.04 LTS:

firefox

46.0+build5-0ubuntu0.16.04.2

Ubuntu 15.10:

firefox

46.0+build5-0ubuntu0.15.10.2

Ubuntu 14.04 LTS:

firefox

46.0+build5-0ubuntu0.14.04.2

Ubuntu 12.04 LTS:

firefox

46.0+build5-0ubuntu0.12.04.2

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

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

References

CVE-2016-2804,

CVE-2016-2806,

CVE-2016-2807,

CVE-2016-2808,

CVE-2016-2811,

CVE-2016-2812,

CVE-2016-2814,

CVE-2016-2816,

CVE-2016-2817,

CVE-2016-2820

Ubuntu Security Notice USN-2952-2

27th April, 2016

php5 regression

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

• Ubuntu 15.10

Summary

USN-2952-1 caused a regression in PHP.

Software description

• php5
  – HTML-embedded scripting language interpreter

Details

USN-2952-1 fixed vulnerabilities in PHP. One of the backported patches
caused a regression in the PHP Soap client. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that the PHP Zip extension incorrectly handled
directories when processing certain zip files. A remote attacker could
possibly use this issue to create arbitrary directories. (CVE-2014-9767)

It was discovered that the PHP Soap client incorrectly validated data
types. A remote attacker could use this issue to cause PHP to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2015-8835, CVE-2016-3185)

It was discovered that the PHP MySQL native driver incorrectly handled TLS
connections to MySQL databases. A man in the middle attacker could possibly
use this issue to downgrade and snoop on TLS connections. This
vulnerability is known as BACKRONYM. (CVE-2015-8838)

It was discovered that PHP incorrectly handled the imagerotate function. A
remote attacker could use this issue to cause PHP to crash, resulting in a
denial of service, or possibly obtain sensitive information. This issue
only applied to Ubuntu 14.04 LTS and Ubuntu 15.10. (CVE-2016-1903)

Hans Jerry Illikainen discovered that the PHP phar extension incorrectly
handled certain tar archives. A remote attacker could use this issue to
cause PHP to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2016-2554)

It was discovered that the PHP WDDX extension incorrectly handled certain
malformed XML data. A remote attacker could possibly use this issue to
cause PHP to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2016-3141)

It was discovered that the PHP phar extension incorrectly handled certain
zip files. A remote attacker could use this issue to cause PHP to crash,
resulting in a denial of service, or possibly obtain sensitive information.
(CVE-2016-3142)

It was discovered that the PHP libxml_disable_entity_loader() setting was
shared between threads. When running under PHP-FPM, this could result in
XML external entity injection and entity expansion issues. This issue only
applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (No CVE number)

It was discovered that the PHP openssl_random_pseudo_bytes() function did
not return cryptographically strong pseudo-random bytes. (No CVE number)

It was discovered that the PHP Fileinfo component incorrectly handled
certain magic files. An attacker could use this issue to cause PHP to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE number pending)

It was discovered that the PHP php_snmp_error() function incorrectly
handled string formatting. A remote attacker could use this issue to cause
PHP to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only applied to Ubuntu 14.04 LTS and Ubuntu
15.10. (CVE number pending)

It was discovered that the PHP rawurlencode() function incorrectly handled
large strings. A remote attacker could use this issue to cause PHP to
crash, resulting in a denial of service. (CVE number pending)

It was discovered that the PHP phar extension incorrectly handled certain
filenames in archives. A remote attacker could use this issue to cause PHP
to crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE number pending)

It was discovered that the PHP mb_strcut() function incorrectly handled
string formatting. A remote attacker could use this issue to cause PHP to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE number pending)

Update instructions

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

Ubuntu 15.10:

php5-cli

5.6.11+dfsg-1ubuntu3.3

php5-cgi

5.6.11+dfsg-1ubuntu3.3

php5-snmp

5.6.11+dfsg-1ubuntu3.3

php5-mysqlnd

5.6.11+dfsg-1ubuntu3.3

php5-gd

5.6.11+dfsg-1ubuntu3.3

libapache2-mod-php5

5.6.11+dfsg-1ubuntu3.3

php5-fpm

5.6.11+dfsg-1ubuntu3.3

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

In general, a standard system update will make all the necessary changes.

References

LP: 1575298

Ubuntu Security Notice USN-2950-2

27th April, 2016

libsoup2.4 update

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

• Ubuntu 16.04 LTS
• Ubuntu 15.10
• Ubuntu 14.04 LTS

Summary

This update fixes libsoup NTLM authentication.

Software description

• libsoup2.4
  – HTTP client/server library for GNOME

Details

USN-2950-1 fixed vulnerabilities in Samba. The updated Samba packages
introduced a compatibility issue with NTLM authentication in libsoup. This
update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Jouni Knuutinen discovered that Samba contained multiple flaws in the
DCE/RPC implementation. A remote attacker could use this issue to perform
a denial of service, downgrade secure connections by performing a man in
the middle attack, or possibly execute arbitrary code. (CVE-2015-5370)

Stefan Metzmacher discovered that Samba contained multiple flaws in the
NTLMSSP authentication implementation. A remote attacker could use this
issue to downgrade connections to plain text by performing a man in the
middle attack. (CVE-2016-2110)

Alberto Solino discovered that a Samba domain controller would establish a
secure connection to a server with a spoofed computer name. A remote
attacker could use this issue to obtain sensitive information.
(CVE-2016-2111)

Stefan Metzmacher discovered that the Samba LDAP implementation did not
enforce integrity protection. A remote attacker could use this issue to
hijack LDAP connections by performing a man in the middle attack.
(CVE-2016-2112)

Stefan Metzmacher discovered that Samba did not validate TLS certificates.
A remote attacker could use this issue to spoof a Samba server.
(CVE-2016-2113)

Stefan Metzmacher discovered that Samba did not enforce SMB signing even if
configured to. A remote attacker could use this issue to perform a man in
the middle attack. (CVE-2016-2114)

Stefan Metzmacher discovered that Samba did not enable integrity protection
for IPC traffic. A remote attacker could use this issue to perform a man in
the middle attack. (CVE-2016-2115)

Stefan Metzmacher discovered that Samba incorrectly handled the MS-SAMR and
MS-LSAD protocols. A remote attacker could use this flaw with a man in the
middle attack to impersonate users and obtain sensitive information from
the Security Account Manager database. This flaw is known as Badlock.
(CVE-2016-2118)

Samba has been updated to 4.3.8 in Ubuntu 14.04 LTS and Ubuntu 15.10.
Ubuntu 12.04 LTS has been updated to 3.6.25 with backported security fixes.

In addition to security fixes, the updated packages contain bug fixes,
new features, and possibly incompatible changes. Configuration changes may
be required in certain environments.

Update instructions

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

Ubuntu 16.04 LTS:

libsoup2.4-1

2.52.2-1ubuntu0.1

Ubuntu 15.10:

libsoup2.4-1

2.50.0-2ubuntu0.1

Ubuntu 14.04 LTS:

libsoup2.4-1

2.44.2-1ubuntu2.1

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

In general, a standard system update will make all the necessary changes.

References

LP: 1573494