Mac OS X is a series of Unix-based graphical interface operating systems developed, marketed, and sold by Apple Inc.

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471 views

Is Adobe Flash Player installer redirect due to a malware?

When I go to http://get.adobe.com/flashplayer/ 'Install Now' will redirect me to their homepage without downloading the update or any explanation. What could be going on? Is some malware ...
5
votes
2answers
221 views

Are X.509 nameConstraints on certificates supported on OS X?

I have the following "chain" of certificates on a test machine right now: A self-signed CA cert, in my Keychain and trusted & trusted by Firefox. A CA cert with with the following, X509v3 Name ...
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0answers
952 views

Why does DestroyFVKeyOnStandby no longer work to secure Mavericks? [closed]

I noticed that using the DestroyFVKeyOnStandby option for FileVault 2 in terminal no longer works since upgrading to Mavericks. Usually you type the following in terminal: sudo pmset -a ...
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5answers
8k views

Reverse engineering (decompiling) an .exe file in OSX

I am a complete newby in the reverse engineering world, and being able to decompile .exe files in my OSX is being a pain. Does anybody know a good decompiler of .exe for OSX, or any hint about where ...
4
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2answers
2k views

Is leaving the root user enabled in Mac OS X a security risk?

To those unfamiliar, the Mac OSX has the root account disabled by default. In order to enable the root user you have to go deep into System Preferences and authenticate yourself with an administrator ...
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2answers
1k views

Difference between OS X md5 and gnu md5sum

I have installed the "md5sum" utility on my Mac and there was also a "md5" binary pre-installed in /sbin. My problem and question is this: "Isn't MD5 a standard algorithm?" Because I get different ...
4
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2answers
811 views

Is there any known encrypting ransomware that attacks Macs?

Just about every article I read about Cryptowall, Cryptolocker, and its ilk seems to assume that the reader is running some flavor of Windows. When I Google "ransomware OSX", I get a long list of ...
4
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1answer
282 views

Safely Use sudo Without allowing Other applications root privileges on Mavericks

I have noticed recently on OS X Mavericks that running sudo will not only allow one to run it again in the same window or even the same application, but will permit any application to run shell ...
4
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1answer
441 views

Security implications for two applications communicating with TCP/IP on localhost

Considering this for the local loopback connection: - It is implemented entirely within the operating system's networking software and passes no packets to any network interface controller. If ...
4
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1answer
21k views

kadmin problem: “Client not found in Kerberos database while initializing kadmin interface”

I'm having problems setting up Single Sign On on my Mac (Snow Leopard). My program was giving the error accept_sec_context: Unspecified GSS failure. Minor code may provide more information: \ Key ...
4
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1answer
1k views

How can I check if a Mac application has NX or ASLR enabled?

According to Wikipedia, the NX bit is set for all x64 binaries: OS X for Intel supports the NX bit on all CPUs supported by Apple (from 10.4.4 – the first Intel release – onwards). Mac OS X 10.4 ...
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2answers
433 views

How can I confirm I'm vulnerable to OS X “rootpipe” (CVE-2015-1130)?

I've read the disclosure post by Emil Kvarnhammar of TrueSec (Hidden backdoor API to root privileges in Apple OS X) and I'm trying to confirm whether I'm vulnerable or not. After creating an exploit....
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3answers
2k views

What is the most secure way to send emails using PGP?

I am a PGP beginner, having just downloaded GPG for OS X. I created my first pub/sec key for my email address and uploaded it to the public key server. GPG has several features available, namely: 1) ...
4
votes
1answer
1k views

Sites are signed with an incorrect VeriSign Class 3 G5 CA

Previously today, I encountered a SSL error trying to access twitter.com in Chrome. Investigating the issue, I encountered the same error accessing discussions.apple.com. Most other HTTPS sites were ...
4
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1answer
100 views

Xcode's git still vulnerable (CVE-2014-9390)? What's the best practice here?

In December everyone and his grandmother were talking about CVE-2014-9390 and we were all busy installing the git maintenance releases. Looking at my Xcode installment today - 41 days later - I still ...
4
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2answers
266 views

Is there a way to check for “hollow” processes, or malware hidden within “normal” processes

I recently came across an article on the The Verge, which centers around the concept of commercial malware production and how it's used around the world. The article introduced me to a number of ...
4
votes
1answer
244 views

Does Apple maintain the security of the built-in Ruby?

Does Apple maintain the security of the Ruby implementation that comes by default in OS X? I recently heard about CVE-2013-4073, but when I ran "Software Update..." on my OS X Lion box, it didn't ...
4
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1answer
874 views

SSL protocol issues on OS X and iOS

I have a PfSense box as a UTM, running snort among other things. I started noticing that when MacBooks and iPhones/iPods connect to my network, the snort log gets flooded with this message: (...
4
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1answer
429 views

PKI integration in MAC OS

I have setup an ejbca pki and integrated certificates in MAC OS for S/MIME signing and encrypting. I have also set up a CRL distribution point and put the CRL online available on an HTTP server. ...
3
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2answers
3k views

LDAP Security problems?

I have installed many Active Directory (AD) based networks and have applied various standard security templates based on best practices, however I have never really looked at LDAP on a deeper level ...
3
votes
3answers
202 views

Can you use ssh for secure inter app communication on the same device?

I use ssh to get an encrypted connection between servers and local machines all the time. It's fast, it's secure, and there's a way to do it in nearly every system programming language that I've used ...
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4answers
1k views

Apple FileVault — would Apple build a backdoor?

Could Apple build a backdoor into it's FileVault encryption technology? Is that a risk you take of using a closed-source encryption product in general? Would using something like TrueCrypt be more ...
3
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1answer
531 views

Is there a viable open source antivirus for OS/X? [closed]

I am interested in finding an antivirus program for the Mac, but not one from Symantec, because I don't trust them. I wonder if perhaps there is an open source solution for antivirus for OS/X? Or ...
3
votes
4answers
270 views

I didn't wipe my hard drive before I sold it. How would a criminal take advantage?

I just sold a Mac Mini, and I erased/formatted the hard drive before I turned it over, but I didn't wipe it securely (not wise, I know). How would a criminal take advantage of this fact? What is the ...
3
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1answer
1k views

Is Dual Factor possible during boot with whole disk encryption on Mac FileVault 2

Mac FileVault 2 is the default disk encryption for newer Macs that occurs in the EFI pre-boot phase. The challenge here is that most smartcard drivers are loaded after the OS loads. Is anyone aware ...
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2answers
117 views

How Does A Hacker Send Spam Emails from Gmail with Two Factor Turned On?

We recently had an incident where two-factor authentication was enabled on a Gmail account but the account was sending spam messages. The device login activity shows no abnormal devices accessing the ...
3
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3answers
265 views

Why Parallels 8 installer looking into my Chrome's Cookies?

While trying to install Parallels on OS X I looked into Activity Monitor to find where is the installed Parallels located (it was weird that it stays invisible in Application folder). And than I found ...
3
votes
1answer
767 views

How is Facebook accessing my iPhone texts in order to recommend friends?

I have noticed that Facebook has been recently recommending people who have texted me. It has been able to connect their number (I believe most of these people are using iPhone) and connect their ...
3
votes
2answers
196 views

How to track down and remove Mac malware that is calling out?

Little Snitch periodically brings up a dialog that says: Terminal via node wants to accept an incoming connection from X on port 3000 (remoteware-cl). X are different IPs in eastern europe. A full ...
3
votes
1answer
487 views

How do I enable support for Cryptographic Message Syntax (CMS) in OpenSSL on OS X?

I want to use the Cryptographic Message Syntax (CMS) of OpenSSL as documented on https://www.openssl.org/docs/apps/cms.html on OS X. When I try to run openssl cms I get the following error: $ ...
3
votes
2answers
692 views

OSX Yosemite and Security/Privacy

I currently have a Macbook Pro running OSX Mavericks, being the skeptic that I am I always wait a bit before upgrading to 'new' OS versions when they are released to see how they fare both stability ...
3
votes
1answer
695 views

How do I configure Terminal Server (and clients) for use over untrusted Wifi networks?

Suppose a client wants to directly connect to Terminal Server exposed to the Internet, without a VPN, ... what software & settings is needed to properly protect against WiFi based attacks? (...
3
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2answers
279 views

Chrome: Found a crash, is it a security vulnerability?

I have been able to make Google Chrome crash, and I was wondering if there are tools or heuristics to determine whether or not the crash is a security vulnerability. How can I determine if a Chrome ...
3
votes
1answer
30 views

missing ESSID from aircrack-ng

I'm using Mac OS X and I was able to sniff packet from my homeNetwork (in order to learn more about how things goes on). I'm sending a deauth command to all my devices to disconnect them and then ...
3
votes
1answer
251 views

How safe is the encryption offered by Mac OS X's Finder?

If you plug in a USB drive, open it in Finder and right-click the Finder window, you get the option to encrypt the drive. What methods does Finder use to encrypt the drive and how safe is it ...
3
votes
1answer
83 views

FileVault and Sleeping mode

I have FileVault activated on 10.10. (Mid 2012 MacBook Pro - MPB) I relaized already that there are different sleep modes. autopoweroff and normal Standby. Whenever the MBP goes into Hypernate mode, I ...
3
votes
1answer
276 views

Upgrade shell to meterpreter behind NAT

I've been playing around with Metasploit the past week, and am successfully able to obtain a basic shell of the victim over the internet. I've currently: Created a DDNS that points to my public IP ...
3
votes
1answer
602 views

Is the 'SUIDGuard' patch safe to implement?

Can someone who really knows what they're looking at advise whether the patch published here by Stefan Esser is in fact safe to install? While I'm very concerned that Apple haven't published an ...
3
votes
1answer
4k views

Chrome showing SSL warning about SHA-1 when the sites don't use SHA-1

My version of Chrome on an iMac (latest 43.0.2357.130 (64-bit)) is showing an SSL warning for well-known sites (Hackernews, GitHub, DigitalOcean): This site uses a weak security configuration (SHA-...
3
votes
3answers
647 views

Password entry on OS X and keyloggers

There's several places in my ‘personal security infrastructure’ (is there a better phrase for that?) where I find myself typing very important passwords into text-fields on OS X (for instance, dis-...
3
votes
1answer
363 views

How is the FileVault master key protected?

FileVault has the functionality to both allow and disable user accounts from booting up the encrypted drive. Reference: this cnet article. See also the stack exchange question How does FileVault 2 ...
3
votes
1answer
187 views

Do public keys make Kerberos more secure (RFC4556)?

We're using IPA to centralize our authentication and I found an option to add a public key for each user. After doing a little research I found this to be an extension to Kerberos 5, RFC4556. From my ...
3
votes
1answer
92 views

How can I view images in forwarded packets on (current) Mac OS X?

How can I view reassembled images on a Mac being used as a router? I'd like to do this as a demonstration of how HTTP doesn't provide privacy. I've done some research, and on Linux there's a tool ...
3
votes
1answer
3k views

Why does the tool 'codesign' in OS X 10.11 (El Capitan) report every Python process as “code object is not signed at all”?

If you start any Python process on OS X 10.11 (10.11.0 or 10.11.1) El Capitan, and run the OS built-in tool 'codesign' to verify the process, you will receive an error saying "code object is not ...
3
votes
1answer
124 views

How to verify .plist and .kext files are legitimate?

While scouring through tons of logs generated during an audit of a Mac filesystem after a potential malware infection, and I am wondering if there are any better ways to verify that all kernel ...
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2answers
101 views

Copy Metasploit from Linux to Mac OSX? [closed]

I'm just wondering is there anyway to move Metasploit framework from Linux to Mac completely and It will be work ? and if yes , how ?
3
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5answers
442 views

Enforcing personal firewall for OS X

We're currently doing PCI compliance, and one of the requirements is that mobile devices that have access to systems involved in processing card data have personal firewall software installed which ...
3
votes
1answer
734 views

Does setting a firmware password add security if FileVault 2 is enabled?

On an up-to-date OS X computer with FileVault 2 (whole-disk encryption, minus the recovery partition), is any security gained by setting a firmware password, as well?
3
votes
2answers
346 views

Does GateKeeper on OS X 10.8 offer any reasonable protection from exploits?

OS X 10.8 comes with GateKeeper, which basically has three settings: Allow only apps from Mac App Store Allow only apps from Mac App Store or that are signed with a valid Apple Developer certificate ...
3
votes
1answer
909 views

Mac sending hundreds of packets to gateway

I've got a user on my work network who brings her personal laptop (macbook) in for work. They've been having some horrendously slow network issues on everything past that hub, so I did some packet ...