2
votes
1answer
455 views

Security: Oauth and Mobile apps

This is what I believe are the security implications of integrating Oauth using embedded webview vs browser in mobile application. Embedded Webview * Keep UI for mobile app Security implications ...
2
votes
1answer
957 views

How can I secure IP Multicast traffic?

I'm interested in securing IP Multicast traffic for content that will be sent globally with several low bandwidth receivers. I understand that simplified Broadcast encryption takes N public keys ...
2
votes
1answer
957 views

How do I ensure secure communication and inter-process authentication in a multi-server application

Note: Question updated to narrow the scope a bit. Scenario Client <-> Application server <-> Data server Users use the client to connect to the application server and build queries for ...
2
votes
1answer
211 views

A problem with the cookie theft detection mechanism of Barry Jaspan's Improved Persistent Login Cookie scheme

I have read this article http://jaspan.com/improved_persistent_login_cookie_best_practice i intend to implement cookie theft detection mechanism Barry Jaspan devised in it. but a problem seemed to ...
2
votes
1answer
543 views

Is there a way to access PKCS5 or 7 padding in OpenSSL without encrypting something?

As the title asks. OpenSSL will pad stuff with PKCS5 if you encrypt something, however is there a way to access this feature without encrypting something?
2
votes
1answer
129 views

Helping developers find logic and authorisation flaws

Professional penetration testers are usually good at finding all sorts of vulnerabilities, including logic flaws, that are highly-specific to the site being tested. However, being a manual activity, ...
2
votes
2answers
204 views

Is exposing the psk in /etc/network/interfaces a security risk?

I have an application that generates the /etc/network/interfaces file for connecting to the users wifi network. This application uses wpa_passphrase to generate the psk, which is then copied into the ...
2
votes
1answer
1k views

Android, how do I prevent Confused Deputy Attacks?

In case that a malicious mobile app hasn't the appropriate permissions to e.g. download a file, it can invoke a browser to download sth. Concrete examples of such an attack are shown from page 27 to ...
2
votes
1answer
538 views

Communicate between two sites both with SSL

I now have two websites - site A and B, both with SSL-certificate, and they have exact same users. So when a user log into site A and click the link to site B, I want to make him auto log in to site B....
2
votes
1answer
625 views

CRLF Injection into Web Page

I was pen-testing a site recently which I found a few issues in, and this continues to a previous question I asked about Null-byte string termination in web applications. I have noticed that the site ...
2
votes
1answer
707 views

Is it necessary to use PEAP for L2TP/IPsec?

This is a sister question of Is EAP-MSCHAP v2 secure?. Based on my understanding, IPsec should have authenticated the server (we're using PKI) and secured the rest of the protocols before the user ...
2
votes
1answer
7k views

What is cleardot.gif next to the senders signature in Gmail? [closed]

I am concerned that my computer has been compromised because I sent an email out - but now I noticed that there is a link in the email I did not insert, and I am worried I have a virus or something. ...
2
votes
1answer
2k views

Configuring GCM cipher suites in Jetty based server

I have a Jetty based secure http service, and I wish to support GCM cipher suites. I know that Jetty internally use JSSE based ciphers, and there are many GCM ciphers coming with JSSE as documented ...
2
votes
1answer
1k views

How to find the pharmacy hack in a Joomla website?

We've discovered today that our Joomla website has been hacked by a pharmacy trojan. It was difficult to discover because most users don't see it when visiting our website. One user reported about 2 ...
2
votes
2answers
231 views

Is there a hard-to-spoof identifier associated with a physical hard disk

I would like to salt the pass phrase with the drive id in such a way that, if the disk were imaged to a new drive with a different id, (e.g. by a government forensics specialist) then the image would ...
2
votes
1answer
527 views

What mechanism to use for simple and secure HTTP API access?

I am currently working on a service which offers a HTTP API for mobile clients. I want clients to authenticate in order to access my API. The server itself is doing the authentication there will be ...
2
votes
1answer
753 views

Why is Access-Control-Allow-Origin required for uncredentialed cross-domain requests? [duplicate]

I understand CSRF and why cross-domain AJAX requests with cookies or other credentials can't be permitted without an Access-Control-Allow-Credentials header explicitly permitting them - otherwise I'd ...
2
votes
2answers
271 views

Dual Authorization (Social Auth 2.0)

Can you see any obvious challenges to requiring 2+ users to confirm authentication requests using an association such as a friendship type of relationship. A practical application would be an ...
2
votes
1answer
754 views

Clear the DNS server's cache?

Is there anyway for the attacker to clear the cache of a DNS server in order to poison it? For example, if someone attacked my DNS server in an attempt to spoof Google.com, they will receive the ...
2
votes
1answer
417 views

Chrome torn down the TLS connection after received server ChangeCipherSpec

I met a strange issue that the TLS connection is always torn down by Chrome after received server ChangeCipherSpec. The sequence is as following: Client Server SYN--> ...
2
votes
1answer
216 views

How to safey interface with compromised USB device?

I'd like to safely analyze and test a T-Mobile UMG366 USB cellular modem. Clearly I'd like to know about this specific device, but more generally I've no idea how to deal with a complex USB dongle ...
2
votes
1answer
2k views

OWASP ZAP does not properly proxy my HTTP responses?

I tried using the web proxy functionality of OWASP Zed Attack Proxy (ZAP) to edit the response JavaScript and HTML. I tried to make a button get the attribute disable="false" instead of disable="". I ...
2
votes
1answer
148 views

Security of RDPs and infected host system

I currently use a lot of Remote Desktop Connections and even mRemoteNG and I am curious, do key loggers and other security threats have the ability to see what I type and do on the RDPs? Can they ...
2
votes
1answer
129 views

What kind of monitoring system can we have for existing security systems in the vehicles?

The vehicles are fitted with a security system to track their movements and report it back to their owners if they are moved unauthorized. My question is: can we have an additional security system ...
2
votes
1answer
414 views

Possible to detect and log CORS and preflight requests in IIS?

I'd like to track and understand if CORS/cross site requests are hitting my website, and if they are succeeding or failing. My goal is to understand if clients are following our documentation ...
2
votes
1answer
244 views

Session Cookie HttpOnly Set After Initial Server Response Showing as Vulnerable

Is a session cookie set without HttpOnly at first, but added before the client browser finishes rendering, still considered vulnerable? The scanner test I need to satisfy believes so, but is this a ...
2
votes
1answer
389 views

What is the most “safest” architecture to run in QEMU? [closed]

Currently OpenBSD supports these architectures ( http://www.openbsd.org/plat.html ): alpha Digital Alpha-based systems amd64 AMD64-based systems armish ARM-based appliances (by Thecus, IO-DATA, ...
2
votes
2answers
3k views

Sqlmap and multipart/form-data forms

I'm working on some security for a website that is built in classic ASP and MS SQL 2000. I've successfully found a couple of flawed forms that allowed SQL injections through the form fields by using ...
2
votes
1answer
323 views

Using X-actual-recipient to divert email

Has anyone noticed exploits involving the use of "X-Actual-Recipient" to covertly divert e-mail from an intended recipient to someone else? I have been told that only someone with root access on the ...
2
votes
2answers
938 views

Mixing stateless and stateful firewall rules

I have been advised that mixing firewall rules that are both stateful and stateless can lead to trouble when it comes to troubleshooting. Is there any truth in this? Take the following two rule sets (...
2
votes
1answer
196 views

Where can I find resources to help me implement a key server?

I would like to implement a fairly basic but nonetheless robust key server for generating and managing symmetric encryption keys. Are there guidelines or best practices out there that I should peruse? ...
2
votes
1answer
632 views

How to manage passwords in a multi-tenant surrounding?

I am building a multi-tenant application in a shared database model. I would like to encrypt sensitive data so that only a particular tenant could have access to his data. What is the best mode to ...
2
votes
2answers
2k views

Allowing user to access password protected website without disclosing the password

A friend of mine has the following problem. She is an accountant and her clients frequently give her their login credentials so she could download their accounting data from various financial ...
2
votes
2answers
74 views

What are the security implications of STARTING a reverse proxied origin server as an unprivileged user?

A common recommendation as part of web server security is to run the server daemon as an unprivileged user (e.g.: nobody) so that exploits executing arbitrary code may have less unwanted effects. ...
2
votes
1answer
1k views

Why do websites limit password length? [duplicate]

I just made a new account with some eGov service (Belgian government). I use LastPass (which generates long, random strings for each site), But the system told me that the maximum allowed length was ...
2
votes
1answer
136 views

DBus proxy Javascript binding issues

Recent Gnome-3 (under GNU/Linux, BSD or other Un*x) offer a gnome shell with nice presentation, but where the configuration and theming are to be done via Internet Browser (and a public URL, on a ...
2
votes
1answer
106 views

Stack smashing protection, reordering variables

So few days ago I started reading a paper about bypassing SSP/ProPolice and after I read it all I tried the bypasses but they didn't work. This is the code I used: int f (char ** argv){ ...
2
votes
1answer
242 views

What is the difference between APSA and APSB?

What would be the difference between Adobe APSA and APSB security bulletins / advisories?
2
votes
1answer
81 views

Remote network security option

I'm a bit confused with some different network security techniques. Say we want a secure communication with a particular mail server in a remote company network. Reading and sending mails should be ...
2
votes
1answer
3k views

CentOS - Local privilege escalation - CVE-2012-0056

I have a server with these properties : cat /etc/lsb-release LSB_VERSION=base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:...
2
votes
2answers
850 views

Force clients to use proxy [closed]

Here's my network configuration: The proxy server is running Ubuntu with Squid on port 3128 and DansGuardian on port 8080. I'd like to force all clients to use the proxy server - specifically, ...
2
votes
1answer
2k views

SSH says Authentication tried for XX with correct key but not from a permitted host

I am using and authorized_hosts file to authorise certain keys. One of those is restricted with the prefix from="1.2.3.4", the others are valid from anywhere. When accessing from a machine that has ...
2
votes
2answers
438 views

Does glibc2 version of the crypt function still use DES for alternative hashing methods?

I'm trying to understand how typical Linux distributions generate the password field for entries in /etc/shadow. I can't figure out what encryption algorithm is being used to produce the encrypted ...
2
votes
1answer
7k views

Snort/IDS detect and alert on possible DoS/DDoS attack?

As per the title, I'm attempting to configure Snort to detect and alert on a incoming Denial of Service attack. Looking at the rulesets, which are primarily signature based rules, I can't see a ...
2
votes
1answer
176 views

Send credentials by sms [duplicate]

If a user forgets his login credentials for a web site, is it secure enough to send users credentials by sms?
2
votes
3answers
738 views

How good is validating source with request.referer than checksum?

I have 2 portals(both are under my control & domain names are different) In 1st portal, there is a link on click of which User can directly get logged into 2nd portal. Link which will be hit in ...
2
votes
1answer
217 views

Will “upgrading” www-data user open up known security issues?

On a isolated local test/dev server I have elevated the nature of the www-data user to enable a smooth workflow for using Dropbox in a web/webapp development pipeline. It has worked quite smoothly in ...
2
votes
2answers
397 views

Barracuda antispam access to active directory in dmz : opening port or not?

I have a Barracuda Antispam unit and look to use recipient validation with active directory to stop sending NDRs (non-delivery reports) when we are being spammed. What I see on the web is people ...
2
votes
1answer
407 views

TrueCrypt External Multimedia Hard Drive

I have an external multimedia hard drive (1.36TB). I made 4 partitions of 350GB each. Then I shredded the free disc space of all the partitions. Now I want to put Truecrypt on the disk. I can't ...
2
votes
1answer
311 views

SSH Protocol classification version exchange messages

I am trying to classify network protocols over network traffic . Now my task is SSH protocol. I read the RFC and know SSH starts with protocol exchange message from both client and server . Format ...

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