My Technical Notes » Linux

Linux local privilege escalation via SUID

Nghiem Ba Hieu — Mon, 30 Jan 2012 09:22:25 +0000

According to CVE-2012-0056, linux kernel 2.6.39 and later versions is vulnerable to local privilege escalation by any local users due to the mem_write function does not properly check for permissions when writing to /proc/<pid>/mem, when ASLR is disabled.

Please take a look at this demonstration to see how it works.

Reference:

1. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-0056

2. http://blog.zx2c4.com/749

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How to uninstall Vmware workstation v 8.0.0.471780.bundle

kartook — Tue, 20 Sep 2011 05:27:35 +0000

I want to uninstall the Vmware workstation v 8.0.0.471780 on my laptop .

Oprating System:Ubuntu 10.10 -64bit ..

kartook@Kartook:~/Downloads$ vmware-installer -l Product Name Product Version ==================== ==================== vmware-workstation 8.0.0.471780 kartook@Kartook:~/Downloads$ sudo vmware-installer -u vmware-workstation 8.0.0.471780 kartook@Kartook:~/Downloads$

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Linux local privilege escalation via SUID CisCo : Installing the VSG ( Virutual Security Gateway ) Software from an ISO File CisCO UCS Required Documentation listed Cisco Datacenter /Nexus 1000V Videos CisCO : Nexus and Cisco’s Unified Computing System

Linux : Flash fullscreen doesn’t work on Ubuntu 10.10

kartook — Wed, 13 Jul 2011 05:34:59 +0000

Flash fullscreen doesn’t work on Ubuntu 10.10

Reason :

The problem has something to do with flash having hardware acceleration enabled

Solution :

Open a terminal and type the following: sudo mkdir /etc/adobe sudo su sudo echo \”OverrideGPUValidation = 1\” >> /etc/adobe/mms.cfg

After executing the code above, we haven’t had a problem viewing flash [...]

VCP Home LAB : Part -3

kartook — Fri, 06 May 2011 06:57:02 +0000

VCP Home Lab- Part 3

Physical HDD partitioning :

HDD 1 – 1 TB

Operating System : 100 GB ( C : ) VCP LAB Images Machines : 200 GB ( D : ) ISO Images, thought Vmdk : 200 GB ( [...]

VCP Home LAB – part-2

kartook — Fri, 06 May 2011 04:15:22 +0000

I am using in this LAB for all are trail version applications . Few application will work for 180 days few less than 3 months .

Software Collection :

Operating Systems : Windows 7 64 bit

Virtual layer : Vmware [...]

Linux : HowTo check the DNS server entries?

kartook — Fri, 04 Feb 2011 05:31:31 +0000

You can simply use that commands to find your DNS servers on a Linux/Unix/BSD based OS

by usign: # cat /etc/resolv.conf

using: # less /etc/resolv.conf

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Linux local privilege escalation via SUID CisCo : Installing the VSG ( Virutual Security Gateway ) Software from an ISO File CisCO UCS Required Documentation listed Cisco : How to install SSL cert on Cisco ACS ? Cisco Datacenter /Nexus 1000V Videos

news : Linux Journal Insider – March 2011

kartook — Thu, 03 Feb 2011 04:52:43 +0000

This month, Shawn and Kyle talk about the tools they keep in their pockets. Smart phones are much more than just phones, and with Linux you’ve got multiple choices for handset operating systems — and this multiple choice test has only correct answers! Get a taste of the “Linux in Your Pocket” issue of Linux [...]

News : The New Features in LibreOffice 3.3

kartook — Thu, 03 Feb 2011 04:18:47 +0000

The Document Foundation launches LibreOffice 3.3

The first stable release of the free office suite is available for download

The Internet, January 25, 2011 – The Document Foundation launches LibreOffice 3.3, the first stable release of the free office suite developed by the community. In less than four months, the number of developers hacking LibreOffice [...]

Security : fail2ban and dependencies

kartook — Tue, 18 Jan 2011 14:04:28 +0000

I like to install fail2ban on my Server for securing ssh and Asterisk .

Installed: fail2ban.noarch 0:0.8.4-23.el5

Dependency Installed: shorewall.noarch 0:4.0.15-1.el5 shorewall-common.noarch 0:4.0.15-1.el5 shorewall-perl.noarch 0:4.0.15-1.el5 shorewall-shell.noarch 0:4.0.15-1.el5

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Linux :setting up NFS shares

kartook — Sat, 11 Dec 2010 05:49:25 +0000

On server:

vi /etc/exports

add:

/home/data 192.168.170.0/255.255.255.0(rw)

# chkconfig nfsd on # service nfsd start

On Client:

#mkdir /home/data

#mount -t nfs 192.168.170.1:/home/data /home/data

Make it automount:

#vi /etc/fstab

192.168.170.1:/home /home nfs rw,bg,hard,intr 0 0

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Linux local privilege escalation via SUID How to uninstall Vmware workstation v 8.0.0.471780.bundle Linux : Flash fullscreen doesn’t work on Ubuntu 10.10 VCP Home LAB : Part -3 VCP Home LAB – part-2