Virtualization is the creation of a virtual (rather than actual) version of something, such as an operating system, a server, a storage device or network resources.

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8
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2answers
215 views

When do shared disks “leak” data to other VMs, and how is that mitigated?

Inspired by this answer, I would like to know what are some common threats and mitigation techniques used to prevent one VM from leaking data to another via the shared storage infrastructure. ...
3
votes
1answer
63 views

“Memory Sinkhole” attack and virtual machines?

Recently a design flaw in some Intel X86 processors was revealed at Blackhat. The flaw enables malicious code to gain access to SMM. The flaw can be exploited by an attacker with administrator ...
3
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0answers
131 views

Enabling virutalization, addressing the bluepill risk?

Background to this question is the ambivalence I assume with virtualization. Also to start directly with clarity: the term bluepill should here be a placeholder to denote "malware that uses ...
51
votes
6answers
4k views

Is it safe to install malware in a VM

Is it safe to install malware in virtual machines? I would like to investigate malware, but I don't want to infect my own computer. Can I install the malware in a VMWare VM, maybe even without ...
2
votes
1answer
46 views

Can virtualization protect me from an infected BIOS?

As you know, there are attacks on the firmware of BIOS and HDD. What if I used some kind of VMS, maybe VirtualBox? Will this protect me from an already infected BIOS (and by that, I mean, no one can ...
8
votes
1answer
89 views

Attacks on keys generated with low entropy

If I were to give someone a two 4096 bits keys, and say one was generated in a Linux OS with very very low entropy available, and one was generated in a Linux OS with more than enough entropy. Would ...
1
vote
1answer
47 views

Virtual Machine Integrity Hash Check

If I used virtualbox to create a snapshot template of a preconfigured linux machine and wanted to ensure that no one has tampered with my snapshot, could I simply keep a comparable hash of the VDI ...
6
votes
1answer
61 views

VirtualBox: Ubuntu With or Without Virtual Hard Drive

I've been working on a setup using VirtualBox that uses the Whonix Gateway as a Tor middlebox and I am planning on using Ubuntu for the workstation. I don't plan on storing any information on the ...
2
votes
1answer
56 views

Boot Attacks possible on encryption keys used in virtual machines

Is it possible for an attacker to restore passwords or encryption keys that one has used in a virtual machine the same way like restoring keys that have been used in a standard system applying a boot ...
1
vote
1answer
222 views

Security issues for host system when running a home web server on a VM

I want to run a web server at home (really for the fun and learning of web/network and other security best practices), running a web app that I plan to write with Ruby on Rails and be able to access ...
1
vote
2answers
66 views

Safety of routing a network to a firewall

I am studying for my CompTIA Security+ qualification and have come across the following question. Question : You are implementing a testing environment for a development team. They use several ...
5
votes
2answers
2k views

Security of LXC compared to OpenVZ

For years, I'm now using OpenVZ on my server, but support discontinued for Debian and Ubuntu, current releases seem to focus on LXC now, which is not a bad idea from the point of comfort. But what ...
2
votes
1answer
42 views

Additional virtual security? [closed]

Besides following VMware's security best practices, are there any other recommended security technologies that are aimed at security and compliance in virtual environments? Vormetric comes to mind, ...
2
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2answers
101 views

Is creating a network bridge in order to connect a virtual machine to the internet insecure?

I have created a virtual machine using Hyper-V running OpenSUSE 13.2. In order to get an Internet connection on the virtual OS I created an external virtual switch. Windows 8.1 then automatically ...
2
votes
1answer
62 views

Will two virtual machines running on the same physical host machine get the same value from /dev/random?

Will two virtual machines running on the same physical host machine get the same value from /dev/random if read over the same time period? Say that Virtual-machine-1 wants to generate its ssh host ...
0
votes
1answer
17 views

Is it possible to FDE a VPS/VMS

Is it possible to implement Full Disk Encryption on a Virtual Machine Server or a Virtual Private Server? Also, if it's possible, will the service provider (of the VPS) be able to decrypt/see my ...
86
votes
7answers
55k views

How secure are virtual machines really? False sense of security?

I was reading this CompTIA Security+ SYO-201 book, and the author David Prowse claims that: Whichever VM you select, the VM cannot cross the software boundaries set in place. For example, a ...
1
vote
1answer
59 views

How secure is QEMU/KVM? [closed]

I'm worrying about the security of the VM host machine (against guests) as the Kernel-Based Vitrual Machine operates at kernel level. UPDATE: Is there any guarantee that a guest can't ...
0
votes
0answers
56 views

Firewall in virtual machine

I'm putting my server to use as a file server and a firewall. I'm looking at KVM or Xen VM setup where file server and firewall get their own VMs and host is just supplying the hardware (so Xen way, I ...
2
votes
3answers
391 views

Completely encrypting virtual machine (for free) [closed]

I know in VMware workstation there's the option to encrypt a virtual machine. Is there a free way to do this without VMware workstation? I'm aiming for the fullest encryption and encapsulation ...
11
votes
1answer
574 views

Why is EC2 not vulnerable to VENOM?

I saw the advisory stating that EC2 instances are not vulnerable to VENOM. My understanding is that EC2 runs on Xen, and that VENOM affects XEN. Can anyone explain why EC2 is not vulnerable? Do ...
1
vote
1answer
51 views

Virtual Environments vs SELinux/AppArmor : Which is better for running unreliable applications?

By virtual environments, I mean Linux containers like Docker and Vagrant and not full blown VirtualBox. So, the issue is that I often have to install packages from untrusted sources in my Ubuntu. ...
2
votes
3answers
831 views

How secure is VirtualBox for privacy/anonymity? [closed]

Is it possible that Oracle places backdoors in VirtualBox that compromise a user's privacy/anonymity? For example, is running Whonix through VirtualBox a secure set up if your host OS is unencrypted? ...
0
votes
3answers
65 views

Isolate part of my PC to keep security for online purchases?

Soon I'll doing some purchases online using my mother's credit card. She's pretty sceptical about online shopping but I convinced her. She's not so sure about how secure it is and since I'm not so ...
7
votes
3answers
461 views

CTF competitions/challenges that are Windows based?

I've been messing about in CTF's for a while and I also do pen-testing professionally, what i've noticed is a distinct lack of CTF competitions using windows environments. This is in stark contrast ...
8
votes
4answers
7k views

How to detect hosts running in virtual machines with nmap?

I have to determine if a given subnet has virtual hosts. Are there any ideas about what switches to use?
3
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2answers
126 views

Is VM per service a reasonable server security model?

Let's say I am hosting several services on my server, for instance, email and a web page. I am concerned that the web server software may have unknown vulnerabilities in it, which will allow an ...
0
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0answers
43 views

Is it possible to lock guest VMs (or processes) to sticks of physical RAM to prevent row hammer attacks?

I was wondering if it is possible through some means to isolate processes (or preferably guest VMs) to physical sticks of RAM. This would be to prevent row hammer like attacks from using physical ...
4
votes
1answer
90 views

VM production server and low entropy

I'm monitoring a VM functioning as our production server. I noticed it has at many times, quite low entropy (/proc/sys/kernel/random/entropy_avail). On average our server(which among other stuff does ...
3
votes
1answer
90 views

Can you securely allow users to create VM's on their workstations

I've moved from a job where developers were encouraged to use technologies like docker and vagrant to create VM's on their workstations for testing and development. At my new job, the IT manager ...
1
vote
1answer
71 views

Is it possible for guest system to spy host system when using virtual maschine (VMware) [duplicate]

I want to prepare virtual maschine which will be used to connect through vpn with one of my clients. There are some other programs and devices that I have to install in order all of this to work. ...
6
votes
1answer
191 views

Is it possible to emulate real network printer i.e. to run some actual firmware in VM?

I've got to the section related to network printers exploitation while going through one security course. Under "network printer" I understand standalone devices with a dedicated ethernet\wireless ...
3
votes
2answers
241 views

What are ways I can analyze malware in an infected machine, not just clean it?

I often run into infected devices in my environment and would like to learn more about the specific infections that have gotten in. What are the best tools and techniques I could use to do this? I ...
1
vote
2answers
295 views

Setting up a security lab, looking for a little guidance [duplicate]

I'm new here. Over the past couple of years I've had a growing interest in the security aspects of IT/CS. Recently, I've started setting up a lab for myself based on a kali/win7 dualboot and I've ...
2
votes
3answers
656 views

Can I use 777 file permissions inside server virtualisation (that only I have access to) without worry?

For this question, please assume I have followed every possible security measure to secure my Linux server. Only I have access to the web server via one open SSH port. If there are security issues ...
2
votes
1answer
135 views

How to detect when your RAM is being copied or scanned by a hypervisor

I am working in a Virtual Machine that is on a ESXi server on a remote machine. I am not the only one who has access to the ESXi and others could take memory snapshots of my running VM. Is there a way ...
0
votes
1answer
81 views

Infection through Virtual machine in NAT mode

I have a VM box configured using NAT to my host OS. It seems I can ping to the machines in my LAN. If my VM box got infected somehow my malware while surfing, would the malware be able to infect ...
1
vote
0answers
58 views

Snort only detect local issues [closed]

I have installed two physical machines with KVM virtualization using Red Hat as OS ( h1 and h2). In h1 I have installed the virtual machines w1 and db1 In h2 the virtual machines w2 , db1 and ids. ...
1
vote
1answer
56 views

Are paravirtualized drivers a security risk?

Below is a copy of my answer that I gave in some other thread (Would running VMs inside of VMs be a more secure way to study viruses, etc?) about a topic of security of nested virtualization. I would ...
1
vote
2answers
240 views

intentionally vulnerable virtualbox or vmware appliances for practicing mobile pentest? [closed]

Is there any virtualbox or vmware appliances or anything like metasploitable that one can use to practice mobile pentest without the real hardware? I can find those for traditional ethernet but what ...
1
vote
1answer
637 views

How to configure Suricata to not interfere with virtual machine [closed]

I'm currently planning on setting up Suricata as a firewall on my laptop. I'm wondering however if it's possible to set Suricata to not interfere with traffic to and from specific virtual machines ...
0
votes
2answers
87 views

Is it possible to run an encrypted java environment?

I've seen that virtual machines in virtualbox or VMware can be encrypted so that no one on the outside can access the disk, ram or CPU cache since the entire hardware is emulated and encrypted too. ...
1
vote
0answers
106 views

Is there any security risk with adding a **root's** public key to the local user's authorized_keys (so root to login as a user non-interactively?)

Background: I want to try unprivileged lxc containers a try on my small web server (hosting 2-4 users). Since the server is shared among friends, we decided to separate our services from the machine ...
1
vote
1answer
223 views

Why is nmap that slow on my system (ubuntu 14.04)?

I just started to learn something about portscanning with nmap. when i try to run an a nullscan or any other type on a virtual machine (win7 no firewall) the scan needs a lot of time to perform: ...
0
votes
1answer
183 views

Upgrade my Dell Inspiron laptop for PenTesting [closed]

I have a Dell Inspiron N5110 & wanna upgrade it to start practising pentesing with virtual machines. What do u suggest from specs below to upgrade (I have Kali Linux, Tails OS, XP, Metasploitable ...
0
votes
2answers
175 views

Is openVZ patched against all exploits for its current kernel version?

I am looking for a container vitalization software that will allow me to create containers that will house specific software/jobs/tasks which I can start stop at will (and bind to interface aliases). ...
6
votes
2answers
1k views

Is BitLocker on a virtual machine still FIPS 140-2 compliant?

BitLocker can be used as a cryptographic module to fulfill FIPS 140-2 security level 1 compliance. In a common setup, USB thumb drives can be used to unlock drives encrypted by BitLocker on startup. ...
1
vote
1answer
97 views

How can a VPN use a virtual router and not send encrypt traffic and still be safe?

Today in networking class we were talking about VPNs. The prof got on topic of virtual routers and said that a way some VPNs work is by a client would purchase the service from the ISP and the ISP ...
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0answers
59 views

What are the steps to securing encryption keys/databases on an unsecured DAAS provider?

Most Desktop As A Service providers store their virtual hard drives and the VMs RAM in a way that allows them to access their contents. Choosing a provider who offers a 'no-knowledge of server' ...
1
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0answers
161 views

Limit Packets Per Second

Since last week I have been seeing something fishy and it seems to be worsening. I tried many firewalls and they seem to be useless. I blocked all unwanted ports and only few ports are open so I found ...