ubuntu-security-announce Digest, Vol 103, Issue 4

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Today's Topics:

1. [USN-1791-1] Thunderbird vulnerabilities (Chris Coulson)
2. [USN-1792-1] Linux kernel vulnerabilities (John Johansen)
3. [USN-1793-1] Linux kernel vulnerabilities (John Johansen)
4. [USN-1794-1] Linux kernel (OMAP4) vulnerabilities (John Johansen)
5. [USN-1795-1] Linux kernel (Quantal HWE) vulnerabilities
(John Johansen)


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

Message: 1
Date: Mon, 08 Apr 2013 14:35:08 +0100
From: Chris Coulson <chris.coulson@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1791-1] Thunderbird vulnerabilities
Message-ID: <5162C78C.1080006@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1791-1
April 08, 2013

thunderbird vulnerabilities
==========================================================================

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

- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in Thunderbird.

Software Description:
- thunderbird: Mozilla Open Source mail and newsgroup client

Details:

Olli Pettay, Jesse Ruderman, Boris Zbarsky, Christian Holler, Milan
Sreckovic and Joe Drew discovered multiple memory safety issues affecting
Thunderbird. If the user were tricked into opening a specially crafted
message with scripting enabled, an attacker could possibly exploit these
to cause a denial of service via application crash, or potentially
execute code with the privileges of the user invoking Thunderbird.
(CVE-2013-0788)

Ambroz Bizjak discovered an out-of-bounds array read in the
CERT_DecodeCertPackage function of the Network Security Services (NSS)
libary when decoding certain certificates. An attacker could potentially
exploit this to cause a denial of service via application crash.
(CVE-2013-0791)

Mariusz Mlynski discovered that timed history navigations could be used to
load arbitrary websites with the wrong URL displayed in the addressbar. An
attacker could exploit this to conduct cross-site scripting (XSS) or
phishing attacks if scripting were enabled. (CVE-2013-0793)

Cody Crews discovered that the cloneNode method could be used to
bypass System Only Wrappers (SOW) to clone a protected node and bypass
same-origin policy checks. If a user had enabled scripting, an attacker
could potentially exploit this to steal confidential data or execute code
with the privileges of the user invoking Thunderbird. (CVE-2013-0795)

A crash in WebGL rendering was discovered in Thunderbird. An attacker
could potentially exploit this to execute code with the privileges of
the user invoking Thunderbird if scripting were enabled. This issue only
affects users with Intel graphics drivers. (CVE-2013-0796)

Abhishek Arya discovered an out-of-bounds write in the Cairo graphics
library. An attacker could potentially exploit this to execute code with
the privileges of the user invoking Thunderbird. (CVE-2013-0800)

Update instructions:

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

Ubuntu 12.10:
thunderbird 17.0.5+build1-0ubuntu0.12.10.1

Ubuntu 12.04 LTS:
thunderbird 17.0.5+build1-0ubuntu0.12.04.1

Ubuntu 11.10:
thunderbird 17.0.5+build1-0ubuntu0.11.10.1

Ubuntu 10.04 LTS:
thunderbird 17.0.5+build1-0ubuntu0.10.04.1

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

References:
http://www.ubuntu.com/usn/usn-1791-1
CVE-2013-0788, CVE-2013-0791, CVE-2013-0793, CVE-2013-0795,
CVE-2013-0796, CVE-2013-0800, https://launchpad.net/bugs/1162043

Package Information:
https://launchpad.net/ubuntu/+source/thunderbird/17.0.5+build1-0ubuntu0.12.10.1
https://launchpad.net/ubuntu/+source/thunderbird/17.0.5+build1-0ubuntu0.12.04.1
https://launchpad.net/ubuntu/+source/thunderbird/17.0.5+build1-0ubuntu0.11.10.1
https://launchpad.net/ubuntu/+source/thunderbird/17.0.5+build1-0ubuntu0.10.04.1


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Message: 2
Date: Mon, 08 Apr 2013 15:33:34 -0700
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1792-1] Linux kernel vulnerabilities
Message-ID: <516345BE.7030409@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1792-1
April 08, 2013

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

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

- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Mathias Krause discovered several errors in the Linux kernel's xfrm_user
implementation. A local attacker could exploit these flaws to examine parts
of kernel memory. (CVE-2012-6537)

Mathias Krause discovered information leak in the Linux kernel's compat
ioctl interface. A local user could exploit the flaw to examine parts of
kernel stack memory (CVE-2012-6539)

Mathias Krause discovered an information leak in the Linux kernel's
getsockopt for IP_VS_SO_GET_TIMEOUT. A local user could exploit this flaw
to examine parts of kernel stack memory. (CVE-2012-6540)

Emese Revfy discovered that in the Linux kernel signal handlers could leak
address information across an exec, making it possible to by pass ASLR
(Address Space Layout Randomization). A local user could use this flaw to
by pass ASLR to reliably deliver an exploit payload that would otherwise be
stopped (by ASLR). (CVE-2013-0914)

A memory use after free error was discover in the Linux kernel's tmpfs
filesystem. A local user could exploit this flaw to gain privileges or
cause a denial of service (system crash). (CVE-2013-1767)

Mateusz Guzik discovered a race in the Linux kernel's keyring. A local user
could exploit this flaw to cause a denial of service (system crash).
(CVE-2013-1792)

Update instructions:

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

Ubuntu 10.04 LTS:
linux-image-2.6.32-46-386 2.6.32-46.107
linux-image-2.6.32-46-generic 2.6.32-46.107
linux-image-2.6.32-46-generic-pae 2.6.32-46.107
linux-image-2.6.32-46-ia64 2.6.32-46.107
linux-image-2.6.32-46-lpia 2.6.32-46.107
linux-image-2.6.32-46-powerpc 2.6.32-46.107
linux-image-2.6.32-46-powerpc-smp 2.6.32-46.107
linux-image-2.6.32-46-powerpc64-smp 2.6.32-46.107
linux-image-2.6.32-46-preempt 2.6.32-46.107
linux-image-2.6.32-46-server 2.6.32-46.107
linux-image-2.6.32-46-sparc64 2.6.32-46.107
linux-image-2.6.32-46-sparc64-smp 2.6.32-46.107
linux-image-2.6.32-46-versatile 2.6.32-46.107
linux-image-2.6.32-46-virtual 2.6.32-46.107

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

References:
http://www.ubuntu.com/usn/usn-1792-1
CVE-2012-6537, CVE-2012-6539, CVE-2012-6540, CVE-2013-0914,
CVE-2013-1767, CVE-2013-1792

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.32-46.107

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Message: 3
Date: Mon, 08 Apr 2013 15:44:11 -0700
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1793-1] Linux kernel vulnerabilities
Message-ID: <5163483B.7000903@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1793-1
April 08, 2013

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

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

- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Emese Revfy discovered that in the Linux kernel signal handlers could leak
address information across an exec, making it possible to by pass ASLR
(Address Space Layout Randomization). A local user could use this flaw to
by pass ASLR to reliably deliver an exploit payload that would otherwise be
stopped (by ASLR). (CVE-2013-0914)

A memory use after free error was discover in the Linux kernel's tmpfs
filesystem. A local user could exploit this flaw to gain privileges or
cause a denial of service (system crash). (CVE-2013-1767)

Mateusz Guzik discovered a race in the Linux kernel's keyring. A local user
could exploit this flaw to cause a denial of service (system crash).
(CVE-2013-1792)

Mathias Krause discovered a memory leak in the Linux kernel's crypto report
API. A local user with CAP_NET_ADMIN could exploit this leak to examine
some of the kernel's stack memory. (CVE-2013-2546)

Mathias Krause discovered a memory leak in the Linux kernel's crypto report
API. A local user with CAP_NET_ADMIN could exploit this leak to examine
some of the kernel's heap memory. (CVE-2013-2547)

Mathias Krause discovered information leaks in the Linux kernel's crypto
algorithm report API. A local user could exploit these flaws to leak kernel
stack and heap memory contents. (CVE-2013-2548)

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-40-generic 3.2.0-40.64
linux-image-3.2.0-40-generic-pae 3.2.0-40.64
linux-image-3.2.0-40-highbank 3.2.0-40.64
linux-image-3.2.0-40-omap 3.2.0-40.64
linux-image-3.2.0-40-powerpc-smp 3.2.0-40.64
linux-image-3.2.0-40-powerpc64-smp 3.2.0-40.64
linux-image-3.2.0-40-virtual 3.2.0-40.64

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-1793-1
CVE-2013-0914, CVE-2013-1767, CVE-2013-1792, CVE-2013-2546,
CVE-2013-2547, CVE-2013-2548

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.2.0-40.64

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Message: 4
Date: Mon, 08 Apr 2013 15:56:17 -0700
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1794-1] Linux kernel (OMAP4) vulnerabilities
Message-ID: <51634B11.7040207@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1794-1
April 08, 2013

linux-ti-omap4 vulnerabilities
==========================================================================

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

- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-ti-omap4: Linux kernel for OMAP4

Details:

Emese Revfy discovered that in the Linux kernel signal handlers could leak
address information across an exec, making it possible to by pass ASLR
(Address Space Layout Randomization). A local user could use this flaw to
by pass ASLR to reliably deliver an exploit payload that would otherwise be
stopped (by ASLR). (CVE-2013-0914)

A memory use after free error was discover in the Linux kernel's tmpfs
filesystem. A local user could exploit this flaw to gain privileges or
cause a denial of service (system crash). (CVE-2013-1767)

Mateusz Guzik discovered a race in the Linux kernel's keyring. A local user
could exploit this flaw to cause a denial of service (system crash).
(CVE-2013-1792)

Mathias Krause discovered a memory leak in the Linux kernel's crypto report
API. A local user with CAP_NET_ADMIN could exploit this leak to examine
some of the kernel's stack memory. (CVE-2013-2546)

Mathias Krause discovered a memory leak in the Linux kernel's crypto report
API. A local user with CAP_NET_ADMIN could exploit this leak to examine
some of the kernel's heap memory. (CVE-2013-2547)

Mathias Krause discovered information leaks in the Linux kernel's crypto
algorithm report API. A local user could exploit these flaws to leak kernel
stack and heap memory contents. (CVE-2013-2548)

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-1429-omap4 3.2.0-1429.38

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-1794-1
CVE-2013-0914, CVE-2013-1767, CVE-2013-1792, CVE-2013-2546,
CVE-2013-2547, CVE-2013-2548

Package Information:
https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1429.38

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Message: 5
Date: Mon, 08 Apr 2013 16:08:45 -0700
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1795-1] Linux kernel (Quantal HWE) vulnerabilities
Message-ID: <51634DFD.5070900@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1795-1
April 08, 2013

linux-lts-quantal vulnerabilities
==========================================================================

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

- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-lts-quantal: Linux hardware enablement kernel from Quantal

Details:

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)

Emese Revfy discovered that in the Linux kernel signal handlers could leak
address information across an exec, making it possible to by pass ASLR
(Address Space Layout Randomization). A local user could use this flaw to
by pass ASLR to reliably deliver an exploit payload that would otherwise be
stopped (by ASLR). (CVE-2013-0914)

A memory use after free error was discover in the Linux kernel's tmpfs
filesystem. A local user could exploit this flaw to gain privileges or
cause a denial of service (system crash). (CVE-2013-1767)

Mateusz Guzik discovered a race in the Linux kernel's keyring. A local user
could exploit this flaw to cause a denial of service (system crash).
(CVE-2013-1792)

Mathias Krause discovered a memory leak in the Linux kernel's crypto report
API. A local user with CAP_NET_ADMIN could exploit this leak to examine
some of the kernel's stack memory. (CVE-2013-2546)

Mathias Krause discovered a memory leak in the Linux kernel's crypto report
API. A local user with CAP_NET_ADMIN could exploit this leak to examine
some of the kernel's heap memory. (CVE-2013-2547)

Mathias Krause discovered information leaks in the Linux kernel's crypto
algorithm report API. A local user could exploit these flaws to leak kernel
stack and heap memory contents. (CVE-2013-2548)

Update instructions:

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

Ubuntu 12.04 LTS:
linux-image-3.5.0-27-generic 3.5.0-27.46~precise1

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-1795-1
CVE-2013-0228, CVE-2013-0914, CVE-2013-1767, CVE-2013-1792,
CVE-2013-2546, CVE-2013-2547, CVE-2013-2548

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-quantal/3.5.0-27.46~precise1

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