Cisco bit 4 dangerous product WLAN Controller error
Yesterday Cisco released a security bulletin that alerts users of all of its wireless LAN (WLAN) control devices on four newly discovered dangerous errors.
But only WLAN Controller devices use system software version 4.2 and above. Cisco Catalyst 6500 and 7600 Wireless Modules are also confirmed to contain the above security errors.
Of the 4 above errors, up to 3 errors can be used to organize denial of service (DoS) attacks on WLAN Controller lines.
A denial of service attack may cause WLAN Controller to hang completely or will be forced to restart. If continuous DoS attacks will result in the device refusing to process the user's connection request - or to say that it is denying the service.
Out of 3 DoS errors, there are two errors related to Web authentication. Hackers can use a security error detection tool to force WLAN to stop the web authentication service for users who request to connect to the wireless network and force the device to restart. The second error can be exploited by sending a malicious data packet to the login authentication website 'login.html'.
Meanwhile the third DoS error involves the process of WLAN Controller receiving 'IP address package'. Attacks through this security error can cause the device to hang completely. However, this bug has been confirmed to exist only in Software Series 400 Series, Catalyst 6500 Wireless Services Module and 3750 Integrated Wireless LAN Controllers.
Meanwhile, if a fourth error is successfully exploited, a restricted access user can leap into an administrator. This error exists only in devices using software version 4.2.173.0.
In addition to alerting users to security holes, Cisco also releases updates. It is recommended that users quickly download and install the necessary fixes here.
You should read it
- Detect 2 serious security holes in the Zoom application
- 7 Cisco security tips
- Cisco security equipment is targeted at DoS attacks through an old vulnerability
- Warning of dangerous vulnerabilities on WinRAR, users should uninstall or upgrade to a new version
- Discovered a particularly dangerous vulnerability in Cisco Jabber video conferencing software
- Cisco ASA 5585-X - The most powerful security device available today
- Warning: Detecting more than 1000 Cisco router and switch devices in Vietnam has a serious security error
- Microsoft fixes 'dangerous' errors for Windows
- How to fix BlueKeep security error for Windows 2003, Windows XP, Windows 7, Windows Server 2008
- The security flaw threatens more than 2 billion Google Chrome users
- The program 'find money exchange errors' on Facebook, the maximum prize up to 40 thousand USD
- Review the Cisco RV180 VPN router
Maybe you are interested
Fix AirPods automatically pausing music on iPhone quickly What is an encrypted messaging app? Are they really safe? 10 Best Home Office Work Desks You Can Afford How to turn off the Administrator account, Guest hidden in Windows 10 Use a mobile phone as a modem to connect to the Internet Which one-layer or 2-layer tourist tent is better against rain?