ClsHack:Computer Security Blog    

New vulnerabilities for linux systems which utilizes a vulnerability in the IPv4 IGMP can be thrown off by remote.

The technical description:
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Nel kernel 2.6.38 were introduced many new.

The first novelty is that the performance compared to kernel 2.6.37 have improved considerably.
Another important new feature is defined by magic RedHat support for Transparent hugepages.
Transparent hugepages can use the page cache of 2MB or 4MB, compared to the previous 4Kb.

Another new feature is the Virtual File System (VFS), a software component from which you can manage folders and files, updated and optimized in the pathname lookup function.
Interesting then, support for the AMD Fusion architecture and thus for the AMD platform with Brazos APU Ontario and Zacate for netbooks and laptops.
It’ was also introduced Transmit Packet Steering, to improve operations in the number of data packets on the Net.

Install this kernel on ubuntu, it is very simple just go to this site:
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I do not think there is much to explain.

Exploit tested and working by myself on ubuntu 10.04.
Author:

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Affected Software
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At least the following versions have been tested


2.12.1, FC13
2.5, RHEL5 / CentOS5
2.11.1, Ubuntu 10


# The creation mask is inherited by children, and survives even a setuid
# execve. Therefore, we can influence how files are created during
# operation.
umask 0
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Recommended Reading:
[tutorial]Tool for Information Gathering
[tutorial]Tool for Network Mapping

[tutorial]Tool for Vulnerability Identification level Server
[tutorial]Tool for Vulnerability Identification level WEB

Da wikipedia, read:

Privilege escalation or Italian escalation of privileges is the act of exploiting a flaw in a software application to gain access to resources that would normally be protected by an application or user.
The result is that the application performs actions with more privileges than those due and desired by the developer or system administrator.

Think, For example, if a server we manage to have root privileges :D
In this article, we will see the tools, that allow us to “privilege escalation”, namely to gain root privileges on the system on linux and windows.
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It is in fact , not that we want the great knowledges to install a new kernel because now ubuntu makes them already packaged Inventory report :D
But because this ubuntu upgrade our kernel ?
Nel kernel 2.6.33 The project was introduced New, that which is to reverse-engineering drivers for NVidia graphics cards, with the aim of improving the performance of video cards Nvidia in Linux.

Plus will be introducing a new system that can speed up the rendering of graphics, page management, and to improve the performance of the X Server.

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