ubuntu-security-announce Digest, Vol 102, Issue 2

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Today's Topics:

1. [USN-1755-1] OpenJDK 6 vulnerabilities (Jamie Strandboge)
2. [USN-1756-1] Linux kernel vulnerabilities (John Johansen)


----------------------------------------------------------------------

Message: 1
Date: Tue, 05 Mar 2013 19:11:37 -0600
From: Jamie Strandboge <jamie@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1755-1] OpenJDK 6 vulnerabilities
Message-ID: <513697C9.9070904@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"


==========================================================================
Ubuntu Security Notice USN-1755-1
March 05, 2013

openjdk-6 vulnerabilities
==========================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS

Summary:

OpenJDK could be made to crash or run programs as your login if it opened a
specially crafted file.

Software Description:
- openjdk-6: Open Source Java implementation

Details:

It was discovered that OpenJDK did not properly validate certain types
of images. A remote attacker could exploit this to cause OpenJDK to crash.
(CVE-2013-0809)

It was discovered that OpenJDK did not properly check return values when
performing color conversion for images. If a user were tricked into
opening a crafted image with OpenJDK, such as with the Java plugin, a
remote attacker could cause OpenJDK to crash or execute arbitrary code
outside of the Java sandbox with the privileges of the user invoking the
program. (CVE-2013-1493)

Update instructions:

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

Ubuntu 12.04 LTS:
icedtea-6-jre-cacao 6b27-1.12.3-0ubuntu1~12.04.1
icedtea-6-jre-jamvm 6b27-1.12.3-0ubuntu1~12.04.1
openjdk-6-jre 6b27-1.12.3-0ubuntu1~12.04.1
openjdk-6-jre-headless 6b27-1.12.3-0ubuntu1~12.04.1
openjdk-6-jre-lib 6b27-1.12.3-0ubuntu1~12.04.1
openjdk-6-jre-zero 6b27-1.12.3-0ubuntu1~12.04.1

Ubuntu 11.10:
icedtea-6-jre-cacao 6b27-1.12.3-0ubuntu1~11.10.1
icedtea-6-jre-jamvm 6b27-1.12.3-0ubuntu1~11.10.1
openjdk-6-jre 6b27-1.12.3-0ubuntu1~11.10.1
openjdk-6-jre-headless 6b27-1.12.3-0ubuntu1~11.10.1
openjdk-6-jre-lib 6b27-1.12.3-0ubuntu1~11.10.1
openjdk-6-jre-zero 6b27-1.12.3-0ubuntu1~11.10.1

Ubuntu 10.04 LTS:
icedtea-6-jre-cacao 6b27-1.12.3-0ubuntu1~10.04.1
openjdk-6-jre 6b27-1.12.3-0ubuntu1~10.04.1
openjdk-6-jre-headless 6b27-1.12.3-0ubuntu1~10.04.1
openjdk-6-jre-lib 6b27-1.12.3-0ubuntu1~10.04.1
openjdk-6-jre-zero 6b27-1.12.3-0ubuntu1~10.04.1

After a standard system update you need to restart any applications using
OpenJDK, such as your browser, to make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1755-1
CVE-2013-0809, CVE-2013-1493

Package Information:

https://launchpad.net/ubuntu/+source/openjdk-6/6b27-1.12.3-0ubuntu1~12.04.1

https://launchpad.net/ubuntu/+source/openjdk-6/6b27-1.12.3-0ubuntu1~11.10.1

https://launchpad.net/ubuntu/+source/openjdk-6/6b27-1.12.3-0ubuntu1~10.04.1




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Message: 2
Date: Wed, 06 Mar 2013 02:15:45 -0800
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1756-1] Linux kernel vulnerabilities
Message-ID: <51371751.8030708@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1756-1
March 06, 2013

linux vulnerabilities
==========================================================================

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

- Ubuntu 11.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

A failure to validate input was discovered in the Linux kernel's Xen
netback (network backend) driver. A user in a guest OS may exploit this
flaw to cause a denial of service to the guest OS and other guest domains.
(CVE-2013-0216)

A memory leak was discovered in the Linux kernel's Xen netback (network
backend) driver. A user in a guest OS could trigger this flaw to cause a
denial of service on the system. (CVE-2013-0217)

Andrew Jones discovered a flaw with the xen_iret function in Linux kernel's
Xen virtualizeation. In the 32-bit Xen paravirt platform an unprivileged
guest OS user could exploit this flaw to cause a denial of service (crash
the system) or gain guest OS privilege. (CVE-2013-0228)

A flaw was reported in the permission checks done by the Linux kernel for
/dev/cpu/*/msr. A local root user with all capabilities dropped could
exploit this flaw to execute code with full root capabilities.
(CVE-2013-0268)

A flaw was discovered in the Linux kernel's vhost driver used to accelerate
guest networking in KVM based virtual machines. A privileged guest user
could exploit this flaw to crash the host system. (CVE-2013-0311)

An information leak was discovered in the Linux kernel's Bluetooth stack
when HIDP (Human Interface Device Protocol) support is enabled. A local
unprivileged user could exploit this flaw to cause an information leak from
the kernel. (CVE-2013-0349)

A flaw was discovered on the Linux kernel's VFAT filesystem driver when a
disk is mounted with the utf8 option (this is the default on Ubuntu). On a
system where disks/images can be auto-mounted or a FAT filesystem is
mounted an unprivileged user can exploit the flaw to gain root privileges.
(CVE-2013-1773)

Update instructions:

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

Ubuntu 11.10:
linux-image-3.0.0-32-generic 3.0.0-32.50
linux-image-3.0.0-32-generic-pae 3.0.0-32.50
linux-image-3.0.0-32-omap 3.0.0-32.50
linux-image-3.0.0-32-powerpc 3.0.0-32.50
linux-image-3.0.0-32-powerpc-smp 3.0.0-32.50
linux-image-3.0.0-32-powerpc64-smp 3.0.0-32.50
linux-image-3.0.0-32-server 3.0.0-32.50
linux-image-3.0.0-32-virtual 3.0.0-32.50

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

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References:
http://www.ubuntu.com/usn/usn-1756-1
CVE-2013-0216, CVE-2013-0217, CVE-2013-0228, CVE-2013-0268,
CVE-2013-0311, CVE-2013-0349, CVE-2013-1773

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.0.0-32.50

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