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Ubuntu Security Notice USN-1236-1

Ubuntu Security Notice USN-1236-1
Posted Oct 20, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1236-1 - It was discovered that the Auerswald usb driver incorrectly handled lengths of the USB string descriptors. A local attacker with physical access could insert a specially crafted USB device and gain root privileges. It was discovered that the Stream Control Transmission Protocol (SCTP) implementation incorrectly calculated lengths. If the net.sctp.addip_enable variable was turned on, a remote attacker could send specially crafted traffic to crash the system. Various other issues were also addressed.

tags | advisory, remote, local, root, protocol
systems | linux, ubuntu
advisories | CVE-2009-4067, CVE-2011-1573, CVE-2011-2494, CVE-2011-2495, CVE-2011-3188
MD5 | ae2696646303ce38ff705e1ba28f25ad

Ubuntu Security Notice USN-1236-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-1236-1
October 20, 2011

linux vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 8.04 LTS

Summary:

Multiple kernel flaws have been fixed.

Software Description:
- linux: Linux kernel

Details:

It was discovered that the Auerswald usb driver incorrectly handled lengths
of the USB string descriptors. A local attacker with physical access could
insert a specially crafted USB device and gain root privileges.
(CVE-2009-4067)

It was discovered that the Stream Control Transmission Protocol (SCTP)
implementation incorrectly calculated lengths. If the net.sctp.addip_enable
variable was turned on, a remote attacker could send specially crafted
traffic to crash the system. (CVE-2011-1573)

Vasiliy Kulikov discovered that taskstats did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2494)

Vasiliy Kulikov discovered that /proc/PID/io did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2495)

Dan Kaminsky discovered that the kernel incorrectly handled random sequence
number generation. An attacker could use this flaw to possibly predict
sequence numbers and inject packets. (CVE-2011-3188)

Update instructions:

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

Ubuntu 8.04 LTS:
linux-image-2.6.24-29-386 2.6.24-29.95
linux-image-2.6.24-29-generic 2.6.24-29.95
linux-image-2.6.24-29-hppa32 2.6.24-29.95
linux-image-2.6.24-29-hppa64 2.6.24-29.95
linux-image-2.6.24-29-itanium 2.6.24-29.95
linux-image-2.6.24-29-lpia 2.6.24-29.95
linux-image-2.6.24-29-lpiacompat 2.6.24-29.95
linux-image-2.6.24-29-mckinley 2.6.24-29.95
linux-image-2.6.24-29-openvz 2.6.24-29.95
linux-image-2.6.24-29-powerpc 2.6.24-29.95
linux-image-2.6.24-29-powerpc-smp 2.6.24-29.95
linux-image-2.6.24-29-powerpc64-smp 2.6.24-29.95
linux-image-2.6.24-29-rt 2.6.24-29.95
linux-image-2.6.24-29-server 2.6.24-29.95
linux-image-2.6.24-29-sparc64 2.6.24-29.95
linux-image-2.6.24-29-sparc64-smp 2.6.24-29.95
linux-image-2.6.24-29-virtual 2.6.24-29.95
linux-image-2.6.24-29-xen 2.6.24-29.95

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1236-1
CVE-2009-4067, CVE-2011-1573, CVE-2011-2494, CVE-2011-2495,
CVE-2011-3188

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.24-29.95


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