The Hacker News Logo
Subscribe to Newsletter

The Hacker News — Latest Cyber Security, Hacking & Tech News: OAuth

Warning! Don't Click that Google Docs Link You Just Received in Your Email

Warning! Don't Click that Google Docs Link You Just Received in Your Email

May 03, 2017Swati Khandelwal
Did someone just share a random Google Doc with you? First of all — Do not click on that Google Doc link you might have just received in your email and delete it immediately — even if it's from someone you know. I, my colleagues at The Hacker News, and even people all around the Internet, especially journalists, are receiving a very convincing OAuth phishing email, which says that the person [sender] " has shared a document on Google Docs with you. " Once you clicked the link, you will be redirected to a page which says, " Google Docs would like to read, send and delete emails, as well access to your contacts, " asking your permission to "allow" access. If you allow the access, the hackers would immediately get permission to manage your Gmail account with access to all your emails and contacts, without requiring your Gmail password. Beware! New GoogleDocs Phishing Email Scam Spreading Across the World — Here's Everything You Need to K
Nasty Covert Redirect Vulnerability found in OAuth and OpenID

Nasty Covert Redirect Vulnerability found in OAuth and OpenID

May 03, 2014Swati Khandelwal
After Heartbleed bug , a security flaw in widely used open-source software OpenSSL that puts countless websites at risk, another vulnerability has been found in popular authentication software OpenID and authorization software OAuth. Wang Jing , a Chinese mathematics Ph.D student at the Nanyang Technological University in Singapore, found that the OAuth and OpenID open source login tools are vulnerable to the " Covert Redirect " exploit. The login tools ‘ OAuth ’ and ‘OpenID’ protocols are the commonly used open standard for authorization. OAuth designed as a way for users to sign in or sign up for other services using an existing identity of a site such as Google, Facebook, Microsoft or Twitter, whereas OpenID is a decentralized authentication system for the Internet that allows users to log in at websites across the internet with same digital identity. The Covert Redirect vulnerability could affect those who use ‘OAuth’ and ‘OpenID’ protocols to ‘login’ to the websites
Hacking Facebook User 'Access Token' with Man-in-the-Middle Attack

Hacking Facebook User 'Access Token' with Man-in-the-Middle Attack

March 11, 2014Wang Wei
Facebook has several security measures to protect users' account, such as a user " access token " is granted to the Facebook application (like  Candy Crush Saga, Lexulous Word Game ), when the user authorizes it, it provides temporary and secure access to Facebook APIs. To make this possible, users have to ' allow or accep t' the application request so that an app can access your account information with the required permissions. The Access Token stores information about permissions that have been granted as well as information about when the token will expire and which app generated it. Approved Facebook apps can publish or delete content on your behalf using the access tokens, rather than your Facebook password. Access tokens are pretty sensitive, because anyone who knows the access token of a user can access the user's data and can perform any actions on behalf of the user, till the token is valid. In Past years, Many Security Researchers
Facebook Open URL Redirection vulnerability

Facebook Open URL Redirection vulnerability

November 16, 2013Anonymous
Security Researcher Dan Melamed discovered an Open URL redirection vulnerability in Facebook that allowed him to have a facebook.com link redirect to any website without restrictions. An open URL Redirection flaw is generally used to convince a user to click on a trusted link which is specially crafted to take them to an arbitrary website, the target website could be used to serve a malware or for a phishing attack . An Open URL Redirection url flaw in Facebook platform and third party applications also exposes the user's access token at risk if that link is entered as the final destination in an Oauth dialog . The Facebook Open URL Redirection vulnerability exists at landing.php  page with " url " parameter, i.e. http://facebook.com/campaign/landing.php?url=http://yahoo.com This URL will always redirects user to the Facebook 's homepage, but it is sufficient to manipulate the "url" parameter assigning a random string: http://facebo
Vulnerability in Facebook app allows hackers to steal access tokens and hijack accounts

Vulnerability in Facebook app allows hackers to steal access tokens and hijack accounts

October 29, 2013Mohit Kumar
There are more than 100 Million users who are using Facebook mobile app. Facebook has fixed multiple critical vulnerabilities in its Android based applications that allows hackers to steal access tokens and hijack accounts. Egyptian security researcher Mohamed Ramadan, Security researcher with Attack Secure, has who disclosed  a couple of vulnerabilities in the Facebook Main app and Facebook messenger app and Facebook page's manager application for Android. User’s access token is the key to accessing a Facebook account and according to him, an attacker only needs to send a message that contains an attachment of any type, i.e. Videos, documents, and pictures. Once the victim will click on that file to download, immediately victim's access_token will be stored in the Android's log messages called -  logcat ,  that enables other apps to grab user’s access token and hijack the account. Video Demonstration: The second flaw which is reported by Ramadan
Another way to hack Facebook accounts using OAuth vulnerability

Another way to hack Facebook accounts using OAuth vulnerability

April 17, 2013Mohit Kumar
In recent few months White hat Hacker ,' Nir Goldshlager ' reported many critical bugs in Facebook OAuth  mechanism, that allowed an attacker to hijack any Facebook account without user's interaction.  Another hacker, ' Amine Cherrai ' reported a new Facebook OAuth flaw, whose exploitation is actually very similar to Nir Goldshlager 's findings but with a new un-patched way. Before reading further, I would like to suggest you to read following post to understand the basic exploitation mechanism: Facebook OAuth flaw allows gaining full control over any Facebook account Facebook hacking accounts using another OAuth vulnerability URL Redirection flaw in Facebook apps push OAuth vulnerability again in action Now, if you are aware about the vulnerability used against Facebook OAuth in  redirect_uri parameter in  the URL, there is another way that  Amine Cherrai found, to bypass the patch applied by Facebook  security team. He found another
Facebook OAuth flaw allows gaining full control over any Facebook account

Facebook OAuth flaw allows gaining full control over any Facebook account

February 21, 2013Mohit Kumar
Facebook OAuth is used to communicate between Applications & Facebook users, to grant additional permissions to your favorite apps. To make this possible, users have to ' allow or accept ' the application request so that app can access your account information with required permissions. As a normal Facebook user we always think that it is better than entering your Facebook credentials, we can  just allow specific permissions to an app in order to make it work with your account. Today whitehat Hacker ' Nir Goldshlager ' reported ' The Hacker News ' that he discovered a very critical vulnerability in Facebook's OAuth system, that allowed him to get full control over any Facebook account easily even without ' allow or accept ' options. For this purpose he hunt the flaw in a very mannered way i.e Step 1) Understanding the OAuth URL Step 2) Finding a way to use custom parameters in URL Step 3) Bypassing OAuth ' Allow '
Exclusive Deals

Get Daily News Updates By Email

Join over 350,000 information security professionals — Get the best of our cyber security coverage delivered to your inbox every morning.