Posts Tagged ‘remote’

Remotely Exploitable Flaw Puts Millions of Internet-Connected Devices at Risk

Wednesday, July 19th, 2017

Security researchers have discovered a critical remotely exploitable vulnerability in an open-source software development library used by major manufacturers of the Internet-of-Thing devices that eventually left millions of devices vulnerable to hacking.

The vulnerability (CVE-2017-9765), discovered by researchers at the IoT-focused security firm Senrio, resides in the software development library called gSOAP toolkit (Simple Object Access Protocol) — an advanced C/C++ auto-coding tool for developing XML Web services and XML application.

Dubbed “Devil’s Ivy,” the stack buffer overflow vulnerability allows a remote attacker to crash the SOAP WebServices daemon and could be exploited to execute arbitrary code on the vulnerable devices.

The Devil’s Ivy vulnerability was discovered by researchers while analysing an Internet-connected security camera manufactured by Axis Communications.

“When exploited, it allows an attacker to remotely access a video feed or deny the owner access to the feed,” researchers say.

“Since these cameras are meant to secure something, like a bank lobby, this could lead to collection of sensitive information or prevent a crime from being observed or recorded.”

Axis confirmed the vulnerability that exists in almost all of its 250 camera models (you can find the complete list of affected camera models here) and has quickly released patched firmware updates on July 6th to address the vulnerability, prompting partners and customers to upgrade as soon as possible.

However, researchers believe that their exploit would work on internet-connected devices from other vendors as well, as the affected software is used by Canon, Siemens, Cisco, Hitachi, and many others.

Axis immediately informed Genivia, the company that maintains gSOAP, about the vulnerability and Genivia released a patch on June 21, 2017.

The company also reached out to electronics industry consortium ONVIF to ensure all of its members, including Canon, Cisco, and Siemens, those who make use of gSOAP become aware of the issue and can develop patches to fix the security hole.

Internet of Things (IoT) devices has always been the weakest link and, therefore, an easy entry for hackers to get into secured networks. So it is always advisable to keep your Internet-connected devices updated and away from the public Internet.

Source: Remotely Exploitable Flaw Puts Millions of Internet-Connected Devices at Risk

Critical RCE Vulnerability Found in Cisco WebEx Extensions, Again — Patch Now!

Wednesday, July 19th, 2017

A highly critical vulnerability has been discovered in the Cisco Systems’ WebEx browser extension for Chrome and Firefox, for the second time in this year, which could allow attackers to remotely execute malicious code on a victim’s computer.

Cisco WebEx is a popular communication tool for online events, including meetings, webinars and video conferences that help users connect and collaborate with colleagues around the world.  The extension has roughly 20 million active users.Discovered by Tavis Ormandy of Google Project Zero and Cris Neckar of Divergent Security, the remote code execution flaw (CVE-2017-6753) is due to a designing defect in the WebEx browser extension. To exploit the vulnerability, all an attacker need to do is trick victims into visiting a web page containing specially crafted malicious code through the browser with affected extension installed.  Successful exploitation of this vulnerability could result in the attacker executing arbitrary code with the privileges of the affected browser and gaining control of the affected system.

“I see several problems with the way sanitization works, and have produced a remote code execution exploit to demonstrate them,” Ormandy said. “This extension has over 20M [million] active Chrome users alone, FireFox and other browsers are likely to be affected as well.”Cisco has already patched the vulnerability and released “Cisco WebEx Extension 1.0.12” update for Chrome and Firefox browsers that address this issue, though “there are no workarounds that address this vulnerability.”

“This vulnerability affects the browser extensions for Cisco WebEx Meetings Server, Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center), and Cisco WebEx Meetings when they are running on Microsoft Windows,” Cisco confirmed in an advisory released today.

Download Cisco WebEx Extension 1.0.12

In general, users are always recommended to run all software as a non-privileged user in an effort to diminish the effects of a successful attack.

 Fortunately, Apple’s Safari, Microsoft’s Internet Explorer and Microsoft’s Edge are not affected by this vulnerability.  Cisco WebEx Productivity Tools, Cisco WebEx browser extensions for Mac or Linux, and Cisco WebEx on Microsoft Edge or Internet Explorer are not affected by the vulnerability, the company confirmed.The remote code execution vulnerability in Cisco WebEx extension has been discovered second time in this year.


Source: Critical RCE Vulnerability Found in Cisco WebEx Extensions, Again — Patch Now!

Multiple Cisco Wireless Gateways Vulnerable to Remote Attacks

Monday, July 21st, 2014

ultiple Cisco Wireless Residential Gateway products have a security vulnerability in the web server that could allow a remote attacker to hijack the devices remotely.

Cisco announced that a number of its Wireless Residential Gateway products are vulnerable to a remote-code execution attack, which is exploited by sending a specially crafted HTTP request to the web server running on the affected device.

According to Cisco, the flaw is due to the incorrect input validation for HTTP requests, which could allow an attacker to exploit a buffer overflow and run arbitrary code on the device. The bug is about as serious as they come, giving remote, unauthenticated attackers access to the affected machines.

“Successful exploitation of the vulnerability may cause the embedded web server to crash and allow the attacker to inject arbitrary commands and execute arbitrary code with elevated privileges,” the Cisco advisory says, and until now, “There are currently no known workarounds available for this vulnerability.”

The Cisco products affected by the vulnerability are as follows:

Cisco DPC3212 VoIP Cable Modem

Cisco DPC3825 8×4 DOCSIS 3.0 Wireless Residential Gateway

Cisco EPC3212 VoIP Cable Modem

Cisco EPC3825 8×4 DOCSIS 3.0 Wireless Residential Gateway

Cisco Model DPC3010 DOCSIS 3.0 8×4 Cable Modem

Cisco Model DPC3925 8×4 DOCSIS 3.0 with Wireless Residential Gateway with EDVA

Cisco Model DPQ3925 8×4 DOCSIS 3.0 Wireless Residential Gateway with EDVA

Cisco Model EPC3010 DOCSIS 3.0 Cable Modem

Cisco Model EPC3925 8×4 DOCSIS 3.0 with Wireless Residential Gateway with EDVA

Cisco said the security bug exists in the devices whether they are configured in a Gateway mode or Router mode on home or small office gateways.

Cisco uses the Common Vulnerability Scoring System (CVSS) to provide an open and standardized rating of the security holes it finds in its products. This vulnerability received a most critical rating according to its CVSS i.e. base score 10. The vulnerability was reported by Chris Watts of Tech Analysis to Cisco.

Cisco has released and distributed free software updates to its service provider customers that address the vulnerability, the service providers would further pass-on to the affected home and small office customers. The customers are advised to contact their service providers to confirm the software deployed by the service provider includes the fix.

via Multiple Cisco Wireless Gateways Vulnerable to Remote Attacks.

Chrome Remote Desktop app – Google Help

Saturday, April 19th, 2014

Chrome Remote Desktop app

Chrome Remote Desktop allows you to set up your computer for secure remote access. This includes setting up your computer so that you can access it later from another machine; or you can also use the app to let a friend remotely access your computer temporarily, perfect for times when you need help solving a computer problem.

Add the Chrome Remote Desktop app to Chrome

Install the Chrome Remote Desktop app on every computer you want to access remotely and every computer you’d like to connect from.

  1. Visit the Chrome Remote Desktop app page in the Chrome Web Store.
  2. Click Add to Chrome to install the app.
  3. When the confirmation dialog appears, click Add.
  4. A new tab will open and the app’s icon Chrome Remote Desktop App will appear in the Apps section of the page.

If you’re using a Chrome device, you can find the app in the apps list.

via Chrome Remote Desktop app – Chrome Help.