bugs in virtual reality

Top 10 Bugs in Linux Operating System (2019)

If you are not much familiar with Linux, let me explain it to you. From supercomputers, smartphones, and cars to home appliances, Linux has been used in different things since the mid-90s. Just like Windows and Mac, Linux is also an operating system which has been used everywhere around the world. An operating system manages all hardware resources accompanying your desktop or laptop computers. In simple words, the operating system manages communication between the hardware and the software.

Like every software application, the operating system also uses codes and when there are codes, there will be bugs. The Linux distributions are notorious for having plenty of bugs that have come out within a few years. This article discusses the most annoying flaws or bugs in Linux.

The Network Manager Bug

As depicted by its name, the network manager bug automatically passes from one network to another. If one Linux distribution has got the virus, the bug will automatically pass on other Linux distributions. Though the bug is not dangerous for system files, it liquidates the network of the Linux distribution and cut out the Wi-Fi connection. The only way to get rid of this bug is to either reinstall the distribution or allow the operating system to go to the sleep mode.

Dirty Cow Bug

The Dirty Cow is probably the most common Linux bug that allows hackers to write to read-only memory of the operating system. The ROM, as known to everyone, carries the most important functions. The bug allows the local user to access the system. This bug is named cow because it is the abbreviation of (copy on writes). The most astonishing thing about Dirty Cow bug was that it existed for up to 9 years before it was fixed. The manufacturers didn’t fix this scary bug for a long period.

Privilege Escalation Bug

This one is the most serious Linux bug that results in multiple privilege escalation. It can also lead to code execution and can provide hacker greater control over the Linux device. The company solved this bug in around October 2016 but still many distributions are yet to be patched.

The web hosting providers who use Linux were at the risk of becoming a victim of privilege escalation bug. This vulnerability makes the victim to compromise other neighbor users in the network.

The most dangerous thing about this virus is that the danger does not limit to other neighboring users but it may also gain access to administrator machines. This bug was first encountered by Phil Oester who discovered this vulnerability while using HTTP packet capturing software.

The 5 Year Bug

Released in 2009, another Linux bug is closely related to the memory-corruption. It allows users with no privilege on the Linux device to crash and enter malicious code on the infected device. This Linux vulnerability locates in the n-tty-write function which controls a part of the pseudo tty in Linux devices. The bug has been reported to exist in numerous Linux distributions broadly used at the moment. The company also did not fix this bug until 5 years of its discovery. That is why this bug is given nickname as the 5 year old bug.

Remote Root Bug

This bug was discovered by Eric Dumazet who is a Google researcher. He found out that this bug can be used to attack a system without physical access and take control of the kernel box. The hacker has to create custom packers and generate checksum operations to take advantage of the remote root bug. As this process is not as simple, the remote root bug is considered a less dangerous bug as compared to other Linux bugs.

Denial of Service Bug

The hackers can use this Linux vulnerability by sending through a flood of communications and disconnecting the system. The denial of service (DoS) attack can infect the foundation of the system and can also have different effects across the board.

Copy-to-user call Bug

This bug exists in the mm/oom_kill.c file in the Linux Kernel. This is a file that helps to finish a process when memory runs low. The infected file may be unable to handle gather operations. It can open door to denial of service attacks and can also trigger a copy-to-user call.

Memory Corruption Bug

This Linux security bug can corrupt the local memory of the infected device. This is a certain type of memory corruption bug that can be used by hackers to execute arbitrary code or full remote code. A failed exploit attempt can result in denial of service.

Network Card Driver Bug

This is an insufficient input validation bug that can infect the network card driver in the Linux machine. The bug can be passed on specifically crafted packet to the network card. It can knock the system offline and cause denial of service.

NCPFS Implementation Bug

This security bug exists in vulnerable version of the NCPFS implementation in the Linux. This vulnerability does not perform boundary check on user-supplied data. The hackers can exploit this vulnerability to execute arbitrary code.    

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