Monthly Archives: November 2015

Ubuntu

USN-2800-1: Linux kernel vulnerability

Ubuntu Security Notice USN-2800-1

9th November, 2015

linux vulnerability

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

  • Ubuntu 12.04 LTS

Summary

The system could be made to crash under certain conditions.

Software description

  • linux
    – Linux kernel

Details

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux
kernel did not properly catch Alignment Check exceptions. An attacker in a
guest virtual machine could use this to cause a denial of service (system
crash) in the host OS.

Update instructions

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-94-omap

3.2.0-94.134
linux-image-3.2.0-94-powerpc-smp

3.2.0-94.134
linux-image-3.2.0-94-highbank

3.2.0-94.134
linux-image-3.2.0-94-powerpc64-smp

3.2.0-94.134
linux-image-3.2.0-94-generic-pae

3.2.0-94.134
linux-image-3.2.0-94-virtual

3.2.0-94.134
linux-image-3.2.0-94-generic

3.2.0-94.134

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

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

CVE-2015-5307

Ubuntu

USN-2801-1: Linux kernel vulnerability

Ubuntu Security Notice USN-2801-1

9th November, 2015

linux vulnerability

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

  • Ubuntu 14.04 LTS

Summary

The system could be made to crash under certain conditions.

Software description

  • linux
    – Linux kernel

Details

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux
kernel did not properly catch Alignment Check exceptions. An attacker in a
guest virtual machine could use this to cause a denial of service (system
crash) in the host OS.

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-68-powerpc64-emb

3.13.0-68.111
linux-image-3.13.0-68-generic-lpae

3.13.0-68.111
linux-image-3.13.0-68-powerpc-e500mc

3.13.0-68.111
linux-image-3.13.0-68-lowlatency

3.13.0-68.111
linux-image-3.13.0-68-powerpc64-smp

3.13.0-68.111
linux-image-3.13.0-68-generic

3.13.0-68.111
linux-image-3.13.0-68-powerpc-smp

3.13.0-68.111
linux-image-3.13.0-68-powerpc-e500

3.13.0-68.111

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

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

CVE-2015-5307

Ubuntu

USN-2802-1: Linux kernel vulnerability

Ubuntu Security Notice USN-2802-1

9th November, 2015

linux vulnerability

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

  • Ubuntu 15.04

Summary

The system could be made to crash under certain conditions.

Software description

  • linux
    – Linux kernel

Details

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux
kernel did not properly catch Alignment Check exceptions. An attacker in a
guest virtual machine could use this to cause a denial of service (system
crash) in the host OS.

Update instructions

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

Ubuntu 15.04:
linux-image-3.19.0-33-powerpc-smp

3.19.0-33.38
linux-image-3.19.0-33-powerpc-e500mc

3.19.0-33.38
linux-image-3.19.0-33-generic-lpae

3.19.0-33.38
linux-image-3.19.0-33-generic

3.19.0-33.38
linux-image-3.19.0-33-powerpc64-smp

3.19.0-33.38
linux-image-3.19.0-33-lowlatency

3.19.0-33.38
linux-image-3.19.0-33-powerpc64-emb

3.19.0-33.38

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

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

CVE-2015-5307

Ubuntu

USN-2803-1: Linux kernel vulnerability

Ubuntu Security Notice USN-2803-1

9th November, 2015

linux vulnerability

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

  • Ubuntu 15.10

Summary

The system could be made to crash under certain conditions.

Software description

  • linux
    – Linux kernel

Details

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux
kernel did not properly catch Alignment Check exceptions. An attacker in a
guest virtual machine could use this to cause a denial of service (system
crash) in the host OS.

Update instructions

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

Ubuntu 15.10:
linux-image-4.2.0-18-lowlatency

4.2.0-18.22
linux-image-4.2.0-18-generic-lpae

4.2.0-18.22
linux-image-4.2.0-18-powerpc64-emb

4.2.0-18.22
linux-image-4.2.0-18-generic

4.2.0-18.22
linux-image-4.2.0-18-powerpc-e500mc

4.2.0-18.22
linux-image-4.2.0-18-powerpc64-smp

4.2.0-18.22
linux-image-4.2.0-18-powerpc-smp

4.2.0-18.22

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

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

CVE-2015-5307

Ubuntu

USN-2804-1: Linux kernel (Trusty HWE) vulnerability

Ubuntu Security Notice USN-2804-1

9th November, 2015

linux-lts-trusty vulnerability

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

  • Ubuntu 12.04 LTS

Summary

The system could be made to crash under certain conditions.

Software description

  • linux-lts-trusty
    – Linux hardware enablement kernel from Trusty

Details

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux
kernel did not properly catch Alignment Check exceptions. An attacker in a
guest virtual machine could use this to cause a denial of service (system
crash) in the host OS.

Update instructions

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

Ubuntu 12.04 LTS:
linux-image-3.13.0-68-generic

3.13.0-68.111~precise1
linux-image-3.13.0-68-generic-lpae

3.13.0-68.111~precise1

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

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

CVE-2015-5307

Ubuntu

USN-2805-1: Linux kernel (Utopic HWE) vulnerability

Ubuntu Security Notice USN-2805-1

9th November, 2015

linux-lts-utopic vulnerability

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

  • Ubuntu 14.04 LTS

Summary

The system could be made to crash under certain conditions.

Software description

  • linux-lts-utopic
    – Linux hardware enablement kernel from Utopic

Details

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux
kernel did not properly catch Alignment Check exceptions. An attacker in a
guest virtual machine could use this to cause a denial of service (system
crash) in the host OS.

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-3.16.0-53-powerpc64-emb

3.16.0-53.72~14.04.1
linux-image-3.16.0-53-generic-lpae

3.16.0-53.72~14.04.1
linux-image-3.16.0-53-powerpc64-smp

3.16.0-53.72~14.04.1
linux-image-3.16.0-53-generic

3.16.0-53.72~14.04.1
linux-image-3.16.0-53-powerpc-smp

3.16.0-53.72~14.04.1
linux-image-3.16.0-53-powerpc-e500mc

3.16.0-53.72~14.04.1
linux-image-3.16.0-53-lowlatency

3.16.0-53.72~14.04.1

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

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

CVE-2015-5307

Ubuntu

USN-2806-1: Linux kernel (Vivid HWE) vulnerability

Ubuntu Security Notice USN-2806-1

9th November, 2015

linux-lts-vivid vulnerability

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

  • Ubuntu 14.04 LTS

Summary

The system could be made to crash under certain conditions.

Software description

  • linux-lts-vivid
    – Linux hardware enablement kernel from Vivid

Details

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux
kernel did not properly catch Alignment Check exceptions. An attacker in a
guest virtual machine could use this to cause a denial of service (system
crash) in the host OS.

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-3.19.0-33-powerpc-smp

3.19.0-33.38~14.04.1
linux-image-3.19.0-33-powerpc-e500mc

3.19.0-33.38~14.04.1
linux-image-3.19.0-33-generic-lpae

3.19.0-33.38~14.04.1
linux-image-3.19.0-33-generic

3.19.0-33.38~14.04.1
linux-image-3.19.0-33-powerpc64-smp

3.19.0-33.38~14.04.1
linux-image-3.19.0-33-lowlatency

3.19.0-33.38~14.04.1
linux-image-3.19.0-33-powerpc64-emb

3.19.0-33.38~14.04.1

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

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

CVE-2015-5307

Full Disclosure

Joomla CMS – Bad Cryptography – Multiple Vulnerabilities

Posted by Scott Arciszewski on Nov 10

Hi OSS-Sec, Full Disclosure, MITRE, and friends,

I spent roughly half an hour looking at Joomla (and picking up my jaw
from the floor at how bad their crypto is), and this is what I found:

https://github.com/joomla/joomla-cms/issues/created_by/paragonie-scott

It seems to hit the jackpot at “bad crypto bingo”, even going so far
as to deploy a home-grown cipher that is basically XOR-ECB:
https://github.com/joomla/joomla-cms/issues/8327…