2
votes
0answers
73 views

attack on Unix procmail analysis

2 days ago I received the following E-mail (this is its original format not the one of any mailer, but where sensitive information is replaced by ••field_name••): From qqqqqq@freemail.net Thu Jul ...
2
votes
0answers
43 views

A simple HMAC question

Suppose I use a key (and IV) to encrypt a piece of binary data with AES-256-CBC to produce the corresponding encrypted data. Suppose I then throw this encrypted data into HMAC-SHA512 using the same ...
2
votes
0answers
52 views

How to indicate that content in an iframe is untrusted

As part of a website I am developing, untrusted content is displayed in a sandboxed iframe. The content is loaded using the srcdoc attribute, but the iframe is sandboxed using sandbox="allow-scripts", ...
2
votes
0answers
20 views

How CERT.rsa is interrelated with PackageInfo signatures

I am a newbie in security and cryptography, but I am developing Android applications and now wanna to dive deeper into the Android security mechanisms. I am trying to understand how CERT.rsa (as I ...
2
votes
0answers
43 views

If I install a certificate for the purposes of logging into a Wifi connection, is it still safe?

There are some wifi networks (large universities for example) which use HTTPS to get to a login page, and in order to verify that they have not been spoofed, provide the certificate ahead of time ...
2
votes
0answers
36 views

Is it safe to store bearer tokens in an iframe and/or pass them back to the parent window

I am not a security expert, so I am hoping that a few of you might be able to tell me if there are any gaping flaws in the security design for my web app. Hopefully I'll be able to explain this ...
2
votes
0answers
34 views

Security implications of providing an encryption/decryption oracle

I need to provide a service that acts as a symetric encryption/decryption blackbox : the box get a secret key k users send datas d, and get ciphertext c = Encrypt(d,k) users send ciphertext c, and ...
2
votes
0answers
63 views

Should I force Thunderbird to avoid RFC5746 and CVE-2009-3555 security bugs?

I see that the latest version of Thunderbird (38.0.1) still has the defaults set to ignore the error. Is this a big problem? Should I change the defaults to enforce greater security? Here is ...
2
votes
0answers
44 views

Hardware devices for protecting against BadUSB?

Have any devices been released which protect against BadUSB attacks? I'm particularly interested in buying a USB hub which has the following protections: The USB hub itself won't allow reflashing ...
2
votes
0answers
46 views

What technologies does ChromeOS use to secure saved passwords?

I have read that Chrome will use the system's native credential tools to manage saved passwords (e.g. KeyChain on OSX, libsecret on Linux/GNOME etc). Does anyone know what tools are used on ChromeOS? ...
2
votes
0answers
108 views

Nginx and HSM integration to hold private keys

We are using Nginx and storing private keys in file on server. We would like to move private keys to HSM, so that ssl keys are stored in HSM and never leaves HSM. All crypto operations required during ...
2
votes
0answers
37 views

please give me an specific example about “a lattice model of secure information flow”?

Currently I read the paper "A lattice model of secure information flow", but I think this paper is so abstract. Could you please give me an specific example and describe what the secure information ...
2
votes
0answers
52 views

Can a service provider communicate directly with an identity provider?

I'm making an authentication server that will act as an identity provider for my service. Looking at the typical SAML use case, the service provider will redirect the principal to the identity ...
2
votes
0answers
88 views

Ouath2 how does it work (Android client)

I have read a lot about Oauth2 but still cannot understand, how does it work. I will explain how do I understand this protocol. There are some main characters in Oauth protocol interaction. User, ...
2
votes
0answers
73 views

Suspicious web-application requests containing encoded JavaScript function(?)

I've been seeing some odd traffic in the logs for a web-application (Apache) that I'm wondering about, and I'm hoping that someone here has seen this before. The raw requests were variations of: ...
2
votes
0answers
78 views

Risks to company while performing the penetration test

I just want to know what the risks would be to that company who conduct penetration test for other companies/clients. For example a company named "A" providing services for penetration test and that ...
2
votes
0answers
48 views

Simple method requiring no installation of special tools to share a file over the internet

I have searched for related topics, but found other existing answers to not be satisfactory, because they require installing special tools. This is a very common use case. For example, I want to ...
2
votes
0answers
87 views

MySQL BACKRONYM (CVE-2015-3152) only affects MySQL client?

I read the CVE-2015-3152 (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3152) named BACKRONYM (http://backronym.fail/), and what I understood (ELI5 style) was the following: Attacker ...
2
votes
0answers
57 views

What is a 'host identity' in the 'Host Identity Protocol' (HIP)

I'm a little confused about terminology in the Host Identity Protocol (HIP) The two distinct terms Host Identity and Host Identifier are described in https://tools.ietf.org/html/rfc4423#section-3 ...
2
votes
0answers
110 views

How does JavaScript Injection work?

I was watching a DefCon talk and the speaker was saying he was able to infect JavaScript cache files, once the user visited his website/server. From there he was able to load scripts from other sites ...
2
votes
0answers
32 views

CMS/PKCS#7: specifying signatureAlgorithm with digest?

I'm confused about algorithm selection for Cryptographic Message Syntax (a.k.a. CMS, PKCS#7) signed objects (RFC5652 Section 5.1). The SignerInfo structure (RFC5652 Section 5.3) has two separate ...
2
votes
0answers
96 views

Exploitation of Reflected XSS on Android App

I am trying to do a security evaluation of an android application. I came across a situation where one of the activities of the app displays certain form fields in a webview. This form is very ...
2
votes
0answers
98 views

Was TRESOR integrated in the Linux kernel?

If a computer is switched off, the data can stay in RAM memory for a while; decaying over about 5 minutes. This can be made longer by cooling the chips: ...
2
votes
0answers
33 views

Finding Audit Reports and Results for Whole Disk Encryption Solutions

Due to TrueCrypt being pulled from the web even though it's been audited, I was asked to compare the audit of TrueCrypt against audits and information available for other products that do whole disk ...
2
votes
0answers
88 views

Lowercase 'w' seen in C:\windows application paths from wmic services list

In reviewing several Windows 7 computers built from the same image (using wmic services command), I'm seeing most all the Window services paths displayed as C:\windows not C:\Windows. The 'w' is ...
2
votes
0answers
40 views

GUI isolation in X11 when entering Truecrypt password

I have been getting a bit paranoid regarding some of my old TrueCrypt containers. The paranoia has got nothing to do with suspicions regarding TrueCrypt itself (after the shut-down last year), rather ...
2
votes
0answers
84 views

What protections are put in place to prevent rootkits from getting ring 0 access?

I've been learning about What is a rootkit? As well as rootkit building and general system architecture. I have read that there are "User mode" rootkits that run in ring 3. But these aren't the ...
2
votes
0answers
66 views

How to use IIS ssl certificate(CNG) for data encryption

I want to use RSA to encrypt/decrypt some data using IIS's ssl ceritifcate, from within a web service(WCF). I've managed so far to do this by using .NET security ...
2
votes
0answers
267 views

SSL traffic manipulation through ettercap MitM and iptables

I am trying to understand the relation between some tools and concepts used for MitM on a wifi network and how https transaction (over this wifi network) between an android app and the respective ...
2
votes
0answers
30 views

Reference Implementation for Shoup's ECIES?

ECIES is part of both ISO/IEC and IEEE. There's a interop bug between Crypto++'s ECIES and Bouncy Castle's ECIES. I know where the bug lies, and I've been trying to determine who is "right" (for some ...
2
votes
0answers
49 views

What are the privacy and infosec risks with Apple Watches and Android Wear?

From what I can tell, I Apple Watch apps act like a remote control to a nearby iPhone using Bluetooth or BLE. Conversely Android watches have the ability to run full applications, and therefore ...
2
votes
0answers
34 views

Is malware or screen capture possible with iMac as external display?

If using a foreign iMac as an external display (through the Thunderbolt to Thunderbolt, or Mini DisplayPort to Mini DisplayPort cable, and Command+F2 on the iMac, as per iMac Target Display Mode FAQ), ...
2
votes
0answers
70 views

Securing a JavaScript app with RESTful backend

I went through the question Securing a JavaScript Single Page App with RESTful backend that has discussions / options around securing a Javascript client side app that invokes RESTful APIs. However, ...
2
votes
0answers
49 views

Kerberos Authentication

I am trying to understand Kerberos Authentication. So far my understanding is: Supposing 'Alice' (A) wants to talk to 'Bob' (B). Step 1: A -> S: {A, B, None} K(A, S) Where S is the ...
2
votes
0answers
65 views

Is there an HSTS equivalent for DNSSec?

Is there any way to set a DNSSec-always policy similar to how HSTS commands Web Browsers to always use HTTPS? This would mitigate a DNSSec-strip attack (similar to SSLStrip) I'm also unclear if this ...
2
votes
0answers
60 views

How to design a right VPN connection for an organisation (Interconnected MPLS link or Individual FW)

Thanks in advance for your advice We have to implement VPN connection for nearly 7 countries Option 1 : As we have private MPLS link to all 7 countries. It is been outsourced Third party. They ...
2
votes
0answers
83 views

OpenID Connect: Why use authorization code flow?

I have a question about implementing OpenID Connect I was hoping I could get some help on. I understand the different flows and get that the authorization code flow is good because it allow client ...
2
votes
0answers
32 views

In DNSSec, are Delegation Signer Records always SHA-1?

I'm creating a RSA/SHA-512 Zone Signing Key and Key Signing Key at Dynect Managed DNS (corporate offering) The Delegation Signer Record that was created is SHA1. Should I be concerned about this?
2
votes
0answers
81 views

Mitigating the risk of disabling EPA on ADFS

I'm currently investigating the deployment of an Active Directory Federation Services (ADFS) server for providing Single Sign-on for various services. By default, ADFS enables support for Extended ...
2
votes
0answers
107 views

OpenSSL: Allow CBC ciphers for TLS but prevent for SSL3

In my server application using OpenSSL, to prevent the poodle attack, I added an option to fully allow/prevent SSL3 protocol. SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2); //Prevent SSLv2 ...
2
votes
0answers
98 views

How to remove yellow tracking dots from a document?

Assume I have a document which I supspect to have yellow tracking dots. How can I remove them while keeping the actual information on the document? Is making a b&w copy enough? Is the copy machine ...
2
votes
0answers
48 views

Cross Origin Resource Sharing question

I have some mockup html/javascript on my desktop, I made an ajax GET call to: http://www.bungie.net/platform/Destiny/TigerPSN/Account/4611686018429149347/Character/2305843009215132906/Activities/ ...
2
votes
0answers
59 views

How are Intel/Amd Microcode Issues Delivered? Is it possible to block them?

After reading this article, I am really curious as to how, exactly processor microcode updates from Intel or AMD are issued. In what way is the data transmitted? Is it possibly to 'firewall' these ...
2
votes
0answers
88 views

How is Tresorit client-side encryption key stored and managed?

I am using Tresorit on Mac OS X and iPhone. When I am using it there is always applied client-side encryption before posting the file to cloud. The key used for encryption is AES-256 and CFB mode of ...
2
votes
0answers
134 views

Performing an airport scan on my Mac for available WiFi networks pulls up multiple SSID with different mac address. What's going on?

I performed the following command to search for available WiFi networks in my apartment complex: /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport scan | grep OBC I ...
2
votes
0answers
77 views

Does EAP-TLS provide a two-factor authentication?

I am currently setting up FreeRADIUS on my pfSense firewall to authenticate WLAN clients (mainly iOS) via EAP-TLS. I have therefor created a user certificate and a user within the FreeRADIUS user ...
2
votes
0answers
660 views

Java Updates Restrict Unsafe SSL Renegotiation With Active Directory Servers

We have two active directory (AD) hosts, ead01.domain.com and ead02.domain.com; we also have a corresponding service domain, at eadauth.domain.com which round-robins between these AD hosts (via DNS). ...
2
votes
0answers
467 views

JSON Web Tokens vs. SAML

I don't know too much about security. Specifically, I don't understand the difference between JSON Web Tokens, SAML and OAuth 2. If you could provide some pointers and high level overview of their ...
2
votes
0answers
47 views

How is an OpenID Authenticated user Identified?

On a system that I'm working on a user signs up by means of an OpenID/Social Media account (Twitter, Google, Facebook), and then subsequently signs in using that path. The System comprises of a ...
2
votes
0answers
128 views

Rogue WPAD server attack

Today I encountered something I have certainly not seen before first hand. Our IDS blocked some outbound traffic attempts from 5 servers with no WAN access. This traffic was leading to an inactive ...

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