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Today's Topics:
1. [USN-1383-1] Linux kernel (OMAP4) vulnerabilities (John Johansen)
2. [USN-1385-1] APT vulnerability (Marc Deslauriers)
3. [USN-1384-1] Linux kernel (Oneiric backport) vulnerabilities
(John Johansen)
4. [USN-1386-1] Linux kernel (Natty backport) vulnerabilities
(John Johansen)
5. [USN-1387-1] Linux kernel (Maverick backport) vulnerabilities
(John Johansen)
----------------------------------------------------------------------
Message: 1
Date: Tue, 06 Mar 2012 07:20:53 -0800
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1383-1] Linux kernel (OMAP4) vulnerabilities
Message-ID: <4F562B55.8070403@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"
==========================================================================
Ubuntu Security Notice USN-1383-1
March 06, 2012
linux-ti-omap4 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
Summary:
Several security issues were fixed in the kernel.
Software Description:
- linux-ti-omap4: Linux kernel for OMAP4
Details:
Aristide Fattori and Roberto Paleari reported a flaw in the Linux kernel's
handling of IPv4 icmp packets. A remote user could exploit this to cause a
denial of service. (CVE-2011-1927)
Dan Rosenberg reported an error in the old ABI compatibility layer of ARM
kernels. A local attacker could exploit this flaw to cause a denial of
service or gain root privileges. (CVE-2011-1759)
Ben Hutchings reported a flaw in the kernel's handling of corrupt LDM
partitions. A local user could exploit this to cause a denial of service or
escalate privileges. (CVE-2011-2182)
The linux kernel did not properly account for PTE pages when deciding which
task to kill in out of memory conditions. A local, unprivileged could
exploit this flaw to cause a denial of service. (CVE-2011-2498)
A flaw was discovered in the TOMOYO LSM's handling of mount system calls.
An unprivileged user could oops the system causing a denial of service.
(CVE-2011-2518)
A flaw was discovered in the Linux kernel's AppArmor security interface
when invalid information was written to it. An unprivileged local user
could use this to cause a denial of service on the system. (CVE-2011-3619)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.04:
linux-image-2.6.38-1209-omap4 2.6.38-1209.22
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1383-1
CVE-2011-1759, CVE-2011-1927, CVE-2011-2182, CVE-2011-2498,
CVE-2011-2518, CVE-2011-3619
Package Information:
https://launchpad.net/ubuntu/+source/linux-ti-omap4/2.6.38-1209.22
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Message: 2
Date: Tue, 06 Mar 2012 11:18:56 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1385-1] APT vulnerability
Message-ID: <1331050736.3607.7.camel@mdlinux>
Content-Type: text/plain; charset="utf-8"
==========================================================================
Ubuntu Security Notice USN-1385-1
March 06, 2012
apt vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
Summary:
An attacker could trick APT into installing altered packages.
Software Description:
- apt: Advanced front-end for dpkg
Details:
Simon Ruderich discovered that APT incorrectly handled repositories that
use InRelease files. The default Ubuntu repositories do not use InRelease
files, so this issue only affected third-party repositories. If a remote
attacker were able to perform a man-in-the-middle attack, this flaw could
potentially be used to install altered packages.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.10:
apt 0.8.16~exp5ubuntu13.2
Ubuntu 11.04:
apt 0.8.13.2ubuntu4.4
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1385-1
CVE-2012-0214
Package Information:
https://launchpad.net/ubuntu/+source/apt/0.8.16~exp5ubuntu13.2
https://launchpad.net/ubuntu/+source/apt/0.8.13.2ubuntu4.4
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Message: 3
Date: Tue, 06 Mar 2012 08:26:48 -0800
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1384-1] Linux kernel (Oneiric backport) vulnerabilities
Message-ID: <4F563AC8.9070800@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"
==========================================================================
Ubuntu Security Notice USN-1384-1
March 06, 2012
linux-lts-backport-oneiric 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-lts-backport-oneiric: Linux kernel backport from Oneiric
Details:
A bug was discovered in the Linux kernel's calculation of OOM (Out of
memory) scores, that would result in the wrong process being killed. A user
could use this to kill the process with the highest OOM score, even if that
process belongs to another user or the system. (CVE-2011-4097)
Paolo Bonzini discovered a flaw in Linux's handling of the SG_IO ioctl
command. A local user, or user in a VM could exploit this flaw to bypass
restrictions and gain read/write access to all data on the affected block
device. (CVE-2011-4127)
A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtual
interrupt control is not available a local user could use this to cause a
denial of service by starting a timer. (CVE-2011-4622)
A flaw was discovered in the XFS filesystem. If a local user mounts a
specially crafted XFS image it could potential execute arbitrary code on
the system. (CVE-2012-0038)
Andy Whitcroft discovered a that the Overlayfs filesystem was not doing the
extended permission checks needed by cgroups and Linux Security Modules
(LSMs). A local user could exploit this to by-pass security policy and
access files that should not be accessible. (CVE-2012-0055)
A flaw was found in the linux kernels IPv4 IGMP query processing. A remote
attacker could exploit this to cause a denial of service. (CVE-2012-0207)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 10.04 LTS:
linux-image-3.0.0-16-generic 3.0.0-16.29~lucid1
linux-image-3.0.0-16-generic-pae 3.0.0-16.29~lucid1
linux-image-3.0.0-16-server 3.0.0-16.29~lucid1
linux-image-3.0.0-16-virtual 3.0.0-16.29~lucid1
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-1384-1
CVE-2011-4097, CVE-2011-4127, CVE-2011-4622, CVE-2012-0038,
CVE-2012-0055, CVE-2012-0207
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-16.29~lucid1
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Message: 4
Date: Tue, 06 Mar 2012 10:13:48 -0800
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1386-1] Linux kernel (Natty backport) vulnerabilities
Message-ID: <4F5653DC.2060106@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"
==========================================================================
Ubuntu Security Notice USN-1386-1
March 06, 2012
linux-lts-backport-natty 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-lts-backport-natty: Linux kernel backport from Natty
Details:
The linux kernel did not properly account for PTE pages when deciding which
task to kill in out of memory conditions. A local, unprivileged could
exploit this flaw to cause a denial of service. (CVE-2011-2498)
A flaw was discovered in the TOMOYO LSM's handling of mount system calls.
An unprivileged user could oops the system causing a denial of service.
(CVE-2011-2518)
Han-Wen Nienhuys reported a flaw in the FUSE kernel module. A local user
who can mount a FUSE file system could cause a denial of service.
(CVE-2011-3353)
A bug was discovered in the Linux kernel's calculation of OOM (Out of
memory) scores, that would result in the wrong process being killed. A user
could use this to kill the process with the highest OOM score, even if that
process belongs to another user or the system. (CVE-2011-4097)
A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtual
interrupt control is not available a local user could use this to cause a
denial of service by starting a timer. (CVE-2011-4622)
A flaw was discovered in the XFS filesystem. If a local user mounts a
specially crafted XFS image it could potential execute arbitrary code on
the system. (CVE-2012-0038)
Chen Haogang discovered an integer overflow that could result in memory
corruption. A local unprivileged user could use this to crash the system.
(CVE-2012-0044)
A flaw was found in the linux kernels IPv4 IGMP query processing. A remote
attacker could exploit this to cause a denial of service. (CVE-2012-0207)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 10.04 LTS:
linux-image-2.6.38-13-generic 2.6.38-13.56~lucid1
linux-image-2.6.38-13-generic-pae 2.6.38-13.56~lucid1
linux-image-2.6.38-13-server 2.6.38-13.56~lucid1
linux-image-2.6.38-13-virtual 2.6.38-13.56~lucid1
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-1386-1
CVE-2011-2498, CVE-2011-2518, CVE-2011-3353, CVE-2011-4097,
CVE-2011-4622, CVE-2012-0038, CVE-2012-0044, CVE-2012-0207
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-natty/2.6.38-13.56~lucid1
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Message: 5
Date: Tue, 06 Mar 2012 10:26:51 -0800
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1387-1] Linux kernel (Maverick backport) vulnerabilities
Message-ID: <4F5656EB.1090304@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"
==========================================================================
Ubuntu Security Notice USN-1387-1
March 06, 2012
linux-lts-backport-maverick 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-lts-backport-maverick: Linux kernel backport from Maverick
Details:
Aristide Fattori and Roberto Paleari reported a flaw in the Linux kernel's
handling of IPv4 icmp packets. A remote user could exploit this to cause a
denial of service. (CVE-2011-1927)
A flaw was found in the Linux Ethernet bridge's handling of IGMP (Internet
Group Management Protocol) packets. An unprivileged local user could
exploit this flaw to crash the system. (CVE-2011-0716)
Han-Wen Nienhuys reported a flaw in the FUSE kernel module. A local user
who can mount a FUSE file system could cause a denial of service.
(CVE-2011-3353)
A flaw was discovered in the Linux kernel's AppArmor security interface
when invalid information was written to it. An unprivileged local user
could use this to cause a denial of service on the system. (CVE-2011-3619)
A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtual
interrupt control is not available a local user could use this to cause a
denial of service by starting a timer. (CVE-2011-4622)
A flaw was discovered in the XFS filesystem. If a local user mounts a
specially crafted XFS image it could potential execute arbitrary code on
the system. (CVE-2012-0038)
Chen Haogang discovered an integer overflow that could result in memory
corruption. A local unprivileged user could use this to crash the system.
(CVE-2012-0044)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 10.04 LTS:
linux-image-2.6.35-32-generic 2.6.35-32.66~lucid1
linux-image-2.6.35-32-generic-pae 2.6.35-32.66~lucid1
linux-image-2.6.35-32-server 2.6.35-32.66~lucid1
linux-image-2.6.35-32-virtual 2.6.35-32.66~lucid1
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1387-1
CVE-2011-0716, CVE-2011-1927, CVE-2011-3353, CVE-2011-3619,
CVE-2011-4622, CVE-2012-0038, CVE-2012-0044
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-maverick/2.6.35-32.66~lucid1
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