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Ubuntu 12.04 LTS USN-2288-1 Critical: Kernel Threats Identified

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Calendar Grey July 17, 2014
Scroller Ubuntu
Multiple vulnerabilities addressed in Ubuntu 12.04 LTS kernel concerning denial of service and privilege escalation threats.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-trusty: Block storage devices (udeb)

Details:

Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol

(PPP) when used with the Layer Two Tunneling Protocol (L2TP). A local user

could exploit this flaw to gain administrative privileges. (CVE-2014-4943)

Salva Peiró discovered an information leak in the Linux kernel's media-device driver. A local attacker could exploit this flaw to obtain sensitive

information from kernel memory. (CVE-2014-1739)

A bounds check error was discovered in the socket filter subsystem of the

Linux kernel. A local user could exploit this flaw to cause a denial of

service (system crash) via crafted BPF instructions. (CVE-2014-3144)

A remainder calculation error was discovered in the socket filter subsystem

of the Linux kernel. A local user could exploit this flaw to cause a denial

of service (system crash) via crafted BPF instructio...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical privilege escalation Ubuntu kernel service denial administrative access

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.13.0-32-generic   3.13.0-32.57~precise1
  linux-image-3.13.0-32-generic-lpae  3.13.0-32.57~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

https://ubuntu.com/security/notices/USN-2288-1

CVE-2014-1739, CVE-2014-3144, CVE-2014-3145, CVE-2014-3940,

CVE-2014-4608, CVE-2014-4611, CVE-2014-4943

Severity
critical
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Critical

July 17, 2014

Topics%20covered

Topics Covered

security advisory critical privilege escalation Ubuntu kernel service denial administrative access

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-32.57~precise1

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