Ubuntu Security Notice USN-2711-1

17th August, 2015

net-snmp vulnerabilities

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

• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

Net-SNMP could be made to crash or run programs if it received specially
crafted network traffic.

Software description

• net-snmp
  – SNMP (Simple Network Management Protocol) server and applications

Details

It was discovered that Net-SNMP incorrectly handled certain trap messages
when the -OQ option was used. A remote attacker could use this issue to
cause Net-SNMP to crash, resulting in a denial of service. (CVE-2014-3565)

Qinghao Tang discovered that Net-SNMP incorrectly handled SNMP PDU parsing
failures. A remote attacker could use this issue to cause Net-SNMP to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2015-5621)

Update instructions

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

Ubuntu 15.04:

libsnmp30

5.7.2~dfsg-8.1ubuntu5.1

Ubuntu 14.04 LTS:

libsnmp30

5.7.2~dfsg-8.1ubuntu3.1

Ubuntu 12.04 LTS:

libsnmp15

5.4.3~dfsg-2.4ubuntu1.3

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

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

References

CVE-2014-3565,

CVE-2015-5621

Ubuntu Security Notice USN-2716-1

17th August, 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

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel’s
SCTP address configuration lists when using Address Configuration Change
(ASCONF) options on a socket. An unprivileged local user could exploit this
flaw to cause a denial of service (system crash).

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.13.0-62-powerpc64-smp

3.13.0-62.102

linux-image-3.13.0-62-lowlatency

3.13.0-62.102

linux-image-3.13.0-62-powerpc64-emb

3.13.0-62.102

linux-image-3.13.0-62-powerpc-smp

3.13.0-62.102

linux-image-3.13.0-62-powerpc-e500mc

3.13.0-62.102

linux-image-3.13.0-62-generic-lpae

3.13.0-62.102

linux-image-3.13.0-62-powerpc-e500

3.13.0-62.102

linux-image-3.13.0-62-generic

3.13.0-62.102

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-2015-3212

Ubuntu Security Notice USN-2715-1

17th August, 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

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel’s
SCTP address configuration lists when using Address Configuration Change
(ASCONF) options on a socket. An unprivileged local user could exploit this
flaw to cause a denial of service (system crash).

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.13.0-62-generic-lpae

3.13.0-62.102~precise1

linux-image-3.13.0-62-generic

3.13.0-62.102~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-2015-3212

Ubuntu Security Notice USN-2714-1

17th August, 2015

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

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel’s
SCTP address configuration lists when using Address Configuration Change
(ASCONF) options on a socket. An unprivileged local user could exploit this
flaw to cause a denial of service (system crash). (CVE-2015-3212)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker could exploit this flaw to cause a denial of
service using a flood of UDP packets with invalid checksums.
(CVE-2015-5364)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker can cause a denial of service against
applications that use epoll by injecting a single packet with an invalid
checksum. (CVE-2015-5366)

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.2.0-1469-omap4

3.2.0-1469.90

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-2015-3212,

CVE-2015-5364,

CVE-2015-5366

Ubuntu Security Notice USN-2713-1

17th August, 2015

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

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel’s
SCTP address configuration lists when using Address Configuration Change
(ASCONF) options on a socket. An unprivileged local user could exploit this
flaw to cause a denial of service (system crash). (CVE-2015-3212)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker could exploit this flaw to cause a denial of
service using a flood of UDP packets with invalid checksums.
(CVE-2015-5364)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker can cause a denial of service against
applications that use epoll by injecting a single packet with an invalid
checksum. (CVE-2015-5366)

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.2.0-89-highbank

3.2.0-89.127

linux-image-3.2.0-89-generic-pae

3.2.0-89.127

linux-image-3.2.0-89-powerpc64-smp

3.2.0-89.127

linux-image-3.2.0-89-omap

3.2.0-89.127

linux-image-3.2.0-89-generic

3.2.0-89.127

linux-image-3.2.0-89-powerpc-smp

3.2.0-89.127

linux-image-3.2.0-89-virtual

3.2.0-89.127

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-2015-3212,

CVE-2015-5364,

CVE-2015-5366

Ubuntu Security Notice USN-2718-1

17th August, 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

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel’s
SCTP address configuration lists when using Address Configuration Change
(ASCONF) options on a socket. An unprivileged local user could exploit this
flaw to cause a denial of service (system crash).

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.19.0-26-generic-lpae

3.19.0-26.28~14.04.1

linux-image-3.19.0-26-lowlatency

3.19.0-26.28~14.04.1

linux-image-3.19.0-26-generic

3.19.0-26.28~14.04.1

linux-image-3.19.0-26-powerpc64-emb

3.19.0-26.28~14.04.1

linux-image-3.19.0-26-powerpc-smp

3.19.0-26.28~14.04.1

linux-image-3.19.0-26-powerpc64-smp

3.19.0-26.28~14.04.1

linux-image-3.19.0-26-powerpc-e500mc

3.19.0-26.28~14.04.1

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-2015-3212

Ubuntu Security Notice USN-2717-1

17th August, 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

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel’s
SCTP address configuration lists when using Address Configuration Change
(ASCONF) options on a socket. An unprivileged local user could exploit this
flaw to cause a denial of service (system crash).

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.16.0-46-powerpc64-smp

3.16.0-46.62~14.04.1

linux-image-3.16.0-46-lowlatency

3.16.0-46.62~14.04.1

linux-image-3.16.0-46-generic

3.16.0-46.62~14.04.1

linux-image-3.16.0-46-generic-lpae

3.16.0-46.62~14.04.1

linux-image-3.16.0-46-powerpc-e500mc

3.16.0-46.62~14.04.1

linux-image-3.16.0-46-powerpc64-emb

3.16.0-46.62~14.04.1

linux-image-3.16.0-46-powerpc-smp

3.16.0-46.62~14.04.1

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-2015-3212

Ubuntu Security Notice USN-2719-1

17th August, 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

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel’s
SCTP address configuration lists when using Address Configuration Change
(ASCONF) options on a socket. An unprivileged local user could exploit this
flaw to cause a denial of service (system crash).

Update instructions

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

Ubuntu 15.04:

linux-image-3.19.0-26-generic-lpae

3.19.0-26.28

linux-image-3.19.0-26-lowlatency

3.19.0-26.28

linux-image-3.19.0-26-generic

3.19.0-26.28

linux-image-3.19.0-26-powerpc64-emb

3.19.0-26.28

linux-image-3.19.0-26-powerpc-smp

3.19.0-26.28

linux-image-3.19.0-26-powerpc64-smp

3.19.0-26.28

linux-image-3.19.0-26-powerpc-e500mc

3.19.0-26.28

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-2015-3212

Ubuntu Security Notice USN-2710-2

18th August, 2015

openssh regression

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

• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

USN-2710-1 introduced a regression in OpenSSH.

Software description

• openssh
  – secure shell (SSH) for secure access to remote machines

Details

USN-2710-1 fixed vulnerabilities in OpenSSH. The upstream fix for
CVE-2015-5600 caused a regression resulting in random authentication
failures in non-default configurations. This update fixes the problem.

Original advisory details:

Moritz Jodeit discovered that OpenSSH incorrectly handled usernames when
using PAM authentication. If an additional vulnerability were discovered in
the OpenSSH unprivileged child process, this issue could allow a remote
attacker to perform user impersonation. (CVE number pending)

Moritz Jodeit discovered that OpenSSH incorrectly handled context memory
when using PAM authentication. If an additional vulnerability were
discovered in the OpenSSH unprivileged child process, this issue could
allow a remote attacker to bypass authentication or possibly execute
arbitrary code. (CVE number pending)

Jann Horn discovered that OpenSSH incorrectly handled time windows for
X connections. A remote attacker could use this issue to bypass certain
access restrictions. (CVE-2015-5352)

It was discovered that OpenSSH incorrectly handled keyboard-interactive
authentication. In a non-default configuration, a remote attacker could
possibly use this issue to perform a brute-force password attack.
(CVE-2015-5600)

Update instructions

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

Ubuntu 15.04:

openssh-server

1:6.7p1-5ubuntu1.3

Ubuntu 14.04 LTS:

openssh-server

1:6.6p1-2ubuntu2.3

Ubuntu 12.04 LTS:

openssh-server

1:5.9p1-5ubuntu1.7

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

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

References

LP: 1485719

Ubuntu Security Notice USN-2709-1

14th August, 2015

pollinate update

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

• Ubuntu 15.04
• Ubuntu 14.04 LTS

Summary

The certificate bundled with pollinate has been refreshed.

Software description

• pollinate
  – seed the pseudo random number generator in virtual machines

Details

The pollinate package bundles the certificate for entropy.ubuntu.com. This
update refreshes the certificate to match the new certificate for the
server.

Update instructions

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

Ubuntu 15.04:

pollinate

4.11-0ubuntu2.1

Ubuntu 14.04 LTS:

pollinate

4.7-0ubuntu1.3

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

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

References

LP: 1483762