Home / vulnerabilities Ubuntu Security Notice USN-1787-1
Posted on 03 April 2013
Source : packetstormsecurity.org Link
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Ubuntu Security Notice USN-1787-1
April 02, 2013
linux vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
Summary:
Several security issues were fixed in the kernel.
Software Description:
- linux: Linux kernel
Details:
Emese Revfy discovered that in the Linux kernel signal handlers could leak
address information across an exec, making it possible to bypass ASLR
(Address Space Layout Randomization). A local user could use this flaw to
by pass ASLR to reliably deliver an exploit payload that would otherwise be
stopped (by ASLR). (CVE-2013-0914)
A memoery use after free error was discover in the Linux kernel's tmpfs
filesystem. A local user could exploit this flaw to gain privileges or
cause a denial of service (system crash). (CVE-2013-1767)
Mateusz Guzik discovered a race in the Linux kernel's keyring. A local user
could exploit this flaw to cause a denial of service (system crash).
(CVE-2013-1792)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.10:
linux-image-3.0.0-32-generic 3.0.0-32.51
linux-image-3.0.0-32-generic-pae 3.0.0-32.51
linux-image-3.0.0-32-omap 3.0.0-32.51
linux-image-3.0.0-32-powerpc 3.0.0-32.51
linux-image-3.0.0-32-powerpc-smp 3.0.0-32.51
linux-image-3.0.0-32-powerpc64-smp 3.0.0-32.51
linux-image-3.0.0-32-server 3.0.0-32.51
linux-image-3.0.0-32-virtual 3.0.0-32.51
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1787-1
CVE-2013-0914, CVE-2013-1767, CVE-2013-1792
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.0.0-32.51
