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Ubuntu 12.04 LTS USN-1915-1 Critical: Broadcom B43 Driver Exploit

ubuntu
Calendar Grey July 29, 2013
Scroller Ubuntu
A critical format string flaw in the Broadcom B43 driver could allow local users to gain elevated privileges on Ubuntu systems.
The system could be made to crash or run programs as an administrator.

Summary

The system could be made to crash or run programs as an administrator.

Software Description:

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

Details:

Kees Cook discovered a format string vulnerability in the Broadcom B43

wireless driver for the Linux kernel. A local user could exploit this flaw

to gain administrative privileges.

Topics%20covered

Topics Covered

security advisory format string ubuntu administrative access linux kernel driver exploit broadcom

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.5.0-37-generic    3.5.0-37.58~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-1915-1

CVE-2013-2852

Severity
critical
Lowest
Low
Medium
High
Critical

July 29, 2013

Topics%20covered

Topics Covered

security advisory format string ubuntu administrative access linux kernel driver exploit broadcom

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-quantal/3.5.0-37.58~precise1

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