The following updates has been released for Ubuntu Linux:

USN-3497-1: OpenJDK 7 vulnerabilities
USN-3498-1: curl vulnerabilities
USN-3499-1: Exim vulnerability
USN-3500-1: libXfont vulnerability
USN-3501-1: libxcursor vulnerability

USN-3497-1: OpenJDK 7 vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3497-1
November 29, 2017

openjdk-7 vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in OpenJDK 7.

Software Description:
- openjdk-7: Open Source Java implementation

Details:

It was discovered that the Smart Card IO subsystem in OpenJDK did not
properly maintain state. An attacker could use this to specially construct
an untrusted Java application or applet to gain access to a smart card,
bypassing sandbox restrictions. (CVE-2017-10274)

Gaston Traberg discovered that the Serialization component of OpenJDK did
not properly limit the amount of memory allocated when performing
deserializations. An attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2017-10281)

It was discovered that the Remote Method Invocation (RMI) component in
OpenJDK did not properly handle unreferenced objects. An attacker could use
this to specially construct an untrusted Java application or applet that
could escape sandbox restrictions. (CVE-2017-10285)

It was discovered that the HTTPUrlConnection classes in OpenJDK did not
properly handle newlines. An attacker could use this to convince a Java
application or applet to inject headers into http requests.
(CVE-2017-10295)

Francesco Palmarini, Marco Squarcina, Mauro Tempesta, and Riccardo Focardi
discovered that the Serialization component of OpenJDK did not properly
restrict the amount of memory allocated when deserializing objects from
Java Cryptography Extension KeyStore (JCEKS). An attacker could use this to
cause a denial of service (memory exhaustion). (CVE-2017-10345)

It was discovered that the Hotspot component of OpenJDK did not properly
perform loader checks when handling the invokespecial JVM instruction. An
attacker could use this to specially construct an untrusted Java
application or applet that could escape sandbox restrictions.
(CVE-2017-10346)

Gaston Traberg discovered that the Serialization component of OpenJDK did
not properly limit the amount of memory allocated when performing
deserializations in the SimpleTimeZone class. An attacker could use this to
cause a denial of service (memory exhaustion). (CVE-2017-10347)

It was discovered that the Serialization component of OpenJDK did not
properly limit the amount of memory allocated when performing
deserializations. An attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2017-10348, CVE-2017-10357)

It was discovered that the JAXP component in OpenJDK did not properly limit
the amount of memory allocated when performing deserializations. An
attacker could use this to cause a denial of service (memory exhaustion).
(CVE-2017-10349)

It was discovered that the JAX-WS component in OpenJDK did not properly
limit the amount of memory allocated when performing deserializations. An
attacker could use this to cause a denial of service (memory exhaustion).
(CVE-2017-10350)

It was discovered that the Networking component of OpenJDK did not properly
set timeouts on FTP client actions. A remote attacker could use this to
cause a denial of service (application hang). (CVE-2017-10355)

Francesco Palmarini, Marco Squarcina, Mauro Tempesta, Riccardo Focardi, and
Tobias Ospelt discovered that the Security component in OpenJDK did not
sufficiently protect password-based encryption keys in key stores. An
attacker could use this to expose sensitive information. (CVE-2017-10356)

Jeffrey Altman discovered that the Kerberos client implementation in
OpenJDK incorrectly trusted unauthenticated portions of Kerberos tickets. A
remote attacker could use this to impersonate trusted network services or
perform other attacks. (CVE-2017-10388)

Update instructions:

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

Ubuntu 14.04 LTS:
icedtea-7-jre-jamvm 7u151-2.6.11-2ubuntu0.14.04.1
openjdk-7-jre 7u151-2.6.11-2ubuntu0.14.04.1
openjdk-7-jre-headless 7u151-2.6.11-2ubuntu0.14.04.1
openjdk-7-jre-lib 7u151-2.6.11-2ubuntu0.14.04.1
openjdk-7-jre-zero 7u151-2.6.11-2ubuntu0.14.04.1

This update uses a new upstream release, which includes additional
bug fixes. After a standard system update you need to restart any
Java applications or applets to make all the necessary changes.

References:
https://www.ubuntu.com/usn/usn-3497-1
CVE-2017-10274, CVE-2017-10281, CVE-2017-10285, CVE-2017-10295,
CVE-2017-10345, CVE-2017-10346, CVE-2017-10347, CVE-2017-10348,
CVE-2017-10349, CVE-2017-10350, CVE-2017-10355, CVE-2017-10356,
CVE-2017-10357, CVE-2017-10388

Package Information:
https://launchpad.net/ubuntu/+source/openjdk-7/7u151-2.6.11-2ubuntu0.14.04.1

USN-3498-1: curl vulnerabilities

==========================================================================
Ubuntu Security Notice USN-3498-1
November 29, 2017

curl vulnerabilities
==========================================================================

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

- Ubuntu 17.10
- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in curl.

Software Description:
- curl: HTTP, HTTPS, and FTP client and client libraries

Details:

Alex Nichols discovered that curl incorrectly handled NTLM authentication
credentials. A remote attacker could use this issue to cause curl to crash,
resulting in a denial of service, or possibly execute arbitrary code. This
issue only affected Ubuntu 16.04 LTS, Ubuntu 17.04 and Ubuntu 17.10.
(CVE-2017-8816)

It was discovered that curl incorrectly handled FTP wildcard matching. A
remote attacker could use this issue to cause curl to crash, resulting in a
denial of service, or possibly obtain sensitive information.
(CVE-2017-8817)

Update instructions:

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

Ubuntu 17.10:
curl 7.55.1-1ubuntu2.2
libcurl3 7.55.1-1ubuntu2.2
libcurl3-gnutls 7.55.1-1ubuntu2.2
libcurl3-nss 7.55.1-1ubuntu2.2

Ubuntu 17.04:
curl 7.52.1-4ubuntu1.4
libcurl3 7.52.1-4ubuntu1.4
libcurl3-gnutls 7.52.1-4ubuntu1.4
libcurl3-nss 7.52.1-4ubuntu1.4

Ubuntu 16.04 LTS:
curl 7.47.0-1ubuntu2.5
libcurl3 7.47.0-1ubuntu2.5
libcurl3-gnutls 7.47.0-1ubuntu2.5
libcurl3-nss 7.47.0-1ubuntu2.5

Ubuntu 14.04 LTS:
curl 7.35.0-1ubuntu2.13
libcurl3 7.35.0-1ubuntu2.13
libcurl3-gnutls 7.35.0-1ubuntu2.13
libcurl3-nss 7.35.0-1ubuntu2.13

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

References:
https://www.ubuntu.com/usn/usn-3498-1
CVE-2017-8816, CVE-2017-8817

Package Information:
https://launchpad.net/ubuntu/+source/curl/7.55.1-1ubuntu2.2
https://launchpad.net/ubuntu/+source/curl/7.52.1-4ubuntu1.4
https://launchpad.net/ubuntu/+source/curl/7.47.0-1ubuntu2.5
https://launchpad.net/ubuntu/+source/curl/7.35.0-1ubuntu2.13

USN-3499-1: Exim vulnerability

==========================================================================
Ubuntu Security Notice USN-3499-1
November 29, 2017

exim4 vulnerability
==========================================================================

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

- Ubuntu 17.10
- Ubuntu 17.04

Summary:

Exim could be made to crash if it received specially crafted network
traffic.

Software Description:
- exim4: Exim is a mail transport agent

Details:

It was discovered that Exim incorrectly handled certain BDAT data headers.
A remote attacker could possibly use this issue to cause Exim to crash,
resulting in a denial of service.

Update instructions:

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

Ubuntu 17.10:
exim4-daemon-heavy 4.89-5ubuntu1.2
exim4-daemon-light 4.89-5ubuntu1.2

Ubuntu 17.04:
exim4-daemon-heavy 4.88-5ubuntu1.3
exim4-daemon-light 4.88-5ubuntu1.3

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

References:
https://www.ubuntu.com/usn/usn-3499-1
CVE-2017-16944

Package Information:
https://launchpad.net/ubuntu/+source/exim4/4.89-5ubuntu1.2
https://launchpad.net/ubuntu/+source/exim4/4.88-5ubuntu1.3

USN-3500-1: libXfont vulnerability

==========================================================================
Ubuntu Security Notice USN-3500-1
November 29, 2017

libxfont, libxfont1, libxfont2 vulnerability
==========================================================================

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

- Ubuntu 17.10
- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

libXfont could be made to access arbitrary files, including special device
files.

Software Description:
- libxfont: X11 font rasterisation library
- libxfont1: X11 font rasterisation library
- libxfont2: X11 font rasterisation library

Details:

It was discovered that libXfont incorrectly followed symlinks when opening
font files. A local unprivileged user could use this issue to cause the X
server to access arbitrary files, including special device files.

Update instructions:

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

Ubuntu 17.10:
libxfont1 1:1.5.2-4ubuntu1.1
libxfont2 1:2.0.1-3ubuntu1.1

Ubuntu 17.04:
libxfont1 1:1.5.2-4ubuntu0.2
libxfont2 1:2.0.1-3ubuntu0.2

Ubuntu 16.04 LTS:
libxfont1 1:1.5.1-1ubuntu0.16.04.4
libxfont2 1:2.0.1-3~ubuntu16.04.3

Ubuntu 14.04 LTS:
libxfont1 1:1.4.7-1ubuntu0.4

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://www.ubuntu.com/usn/usn-3500-1
CVE-2017-16611

Package Information:
https://launchpad.net/ubuntu/+source/libxfont/1:2.0.1-3ubuntu1.1
https://launchpad.net/ubuntu/+source/libxfont1/1:1.5.2-4ubuntu1.1
https://launchpad.net/ubuntu/+source/libxfont/1:2.0.1-3ubuntu0.2
https://launchpad.net/ubuntu/+source/libxfont1/1:1.5.2-4ubuntu0.2
https://launchpad.net/ubuntu/+source/libxfont/1:1.5.1-1ubuntu0.16.04.4
https://launchpad.net/ubuntu/+source/libxfont2/1:2.0.1-3~ubuntu16.04.3
https://launchpad.net/ubuntu/+source/libxfont/1:1.4.7-1ubuntu0.4

USN-3501-1: libxcursor vulnerability

==========================================================================
Ubuntu Security Notice USN-3501-1
November 29, 2017

libxcursor vulnerability
==========================================================================

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

- Ubuntu 17.10
- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

libxcursor could be made to crash or run programs if it opened a specially
crafted file.

Software Description:
- libxcursor: X11 cursor management library

Details:

It was discovered that libxcursor incorrectly handled certain files. An
attacker could use these issues to cause libxcursor to crash, resulting in
a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 17.10:
libxcursor1 1:1.1.14-3ubuntu0.1

Ubuntu 17.04:
libxcursor1 1:1.1.14-1ubuntu0.17.04.1

Ubuntu 16.04 LTS:
libxcursor1 1:1.1.14-1ubuntu0.16.04.1

Ubuntu 14.04 LTS:
libxcursor1 1:1.1.14-1ubuntu0.14.04.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://www.ubuntu.com/usn/usn-3501-1
CVE-2017-16612

Package Information:
https://launchpad.net/ubuntu/+source/libxcursor/1:1.1.14-3ubuntu0.1
https://launchpad.net/ubuntu/+source/libxcursor/1:1.1.14-1ubuntu0.17.04.1
https://launchpad.net/ubuntu/+source/libxcursor/1:1.1.14-1ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/libxcursor/1:1.1.14-1ubuntu0.14.04.1