There were four different vulnerabilities in the app that could have been exploited by malicious actors – allowing among other things to carry on a man-in-the-disk attack. From permanent denial of service via phone lock, complete data loss with a factory reset (SD card included), serious privacy implication via IMEI and location tracking to even call and SMS log access. And implications for the user can be extremely serious. Due to a string of severe security vulnerabilities remote attackers could track victims’ real-time location, monitor phone calls, and messages, and even delete data stored on the phone.Īccording to the researchers from the cybersecurity service provider Char49 the flaw can be easily exploited. ‘Find My Mobile’ is an Android pre-installed app that comes with most popular Samsung smartphones. The issue is fixed in 61, 60, 73, 70, 69, 0, 6, 0, and 15.8.3.įind My Mobile with a flaw which leaves Samsung phones exposed to remote attacks TeamViewer versions prior to 15.8.3 are vulnerable, and the bug affects various versions of TeamViewer, including: teamviewer10, teamviewer8, teamviewerapi, tvchat1, tvcontrol1, tvfiletransfer1, tvjoinv8, tvpresent1, tvsendfile1, tvsqcustomer1, tvsqsupport1, tvvideocall1 and tvvpn1. It also allows them to capture password hashes, which they can then crack via brute-force.įortunately for users, the attack is difficult to perform and requires user interaction. This automatically grants attackers access to the victim’s machine. It captures SMB authentication sessions on an internal network and relays them to a target machine. In this attack scenario, the NTLM request can then be relayed by attackers using a Responder toolkit. NTLM credentials are based on data obtained during the interactive logon process and consist of a domain name, a user name, and a one-way hash of the user’s password. ![]() NTLM uses an encrypted protocol to authenticate a user without transferring the user’s password. To initiate the attack, the attacker could simply persuade a victim with TeamViewer to click on a crafted URL in a website using watering-hole attacks techniques.Īfter a victim’s TeamViewer app initiates the remote SMB share, Windows will then make the connection using NT LAN Manager (NTLM). In this specific case, values are not “quoted” by the app – meaning that TeamViewer will treat them as commands rather than as input values.Īn attacker could embed a malicious iframe in a website with a crafted URL that would launch the TeamViewer Windows desktop client and force it to open a remote SMB share. But because handler applications can receive data from untrusted sources, the URI values passed to the application may contain malicious data that attempts to exploit the app. Apps need to identify the URIs for the websites they will handle. The flaw stems from the Desktop for Windows app not properly quoting its custom uniform resource identifier (URI) handlers. If exploited, the flaw could allow remote, unauthenticated attackers to execute code on users’ systems or crack their TeamViewer passwords. ![]() ![]() ![]() Popular remote-support software TeamViewer has patched a high-severity flaw (CVE-2020-13699, 8.8/10) in its desktop app for Windows. TeamViewer flaw in Windows app allows password-cracking
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