Ubuntu Security Notice USN-2584-1
30th April, 2015
linux-ec2 vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 10.04 LTS
Summary
The system could be made to run programs as an administrator.
Software description
- linux-ec2
– Linux kernel for EC2
Details
A race condition between chown() and execve() was discovered in the Linux
kernel. A local attacker could exploit this race by using chown on a
setuid-user-binary to gain administrative privileges.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 10.04 LTS:
-
linux-image-2.6.32-377-ec2
2.6.32-377.94
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.