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Ubuntu 12.04 LTS USN-1743-1 Critical: Race Condition Admin Access

ubuntu
Calendar Grey February 22, 2013
Scroller Ubuntu
The Debian Security Announcement DSA-1234-1 has revealed a critical vulnerability in the linux-4.9 kernel, which could permit remote command execution by unprivileged users.
The system could be made to run programs as an administrator.

Summary

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

Software Description:

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

Details:

Suleiman Souhlal, Salman Qazi, Aaron Durbin and Michael Davidson discovered

a race condition in the Linux kernel's ptrace syscall. An unprivileged

local attacker could exploit this flaw to run programs as an administrator.

Topics%20covered

Topics Covered

security advisory critical race condition ubuntu administrative access linux-lts-quantal

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.5.0-25-generic    3.5.0-25.38~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-1743-1

CVE-2013-0871

Severity
critical
Lowest
Low
Medium
High
Critical

February 22, 2013

Topics%20covered

Topics Covered

security advisory critical race condition ubuntu administrative access linux-lts-quantal

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-quantal/3.5.0-25.38~precise1

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