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A famous example of a zip bomb is titled 42.zip, which is a zip file of unknown authorship [4] consisting of 42 kilobytes of compressed data, containing five layers of nested zip files in sets of 16, each bottom-layer archive containing a 4.3-gigabyte (4 294 967 295 bytes; 4 GiB − 1 B) file for a total of 4.5 petabytes (4 503 599 626 321 920 ...
Shellshock, also known as Bashdoor, [1] is a family of security bugs [2] in the Unix Bash shell, the first of which was disclosed on 24 September 2014.Shellshock could enable an attacker to cause Bash to execute arbitrary commands and gain unauthorized access [3] to many Internet-facing services, such as web servers, that use Bash to process requests.
BASHLITE is written in C, and designed to easily cross-compile to various computer architectures. [9]Exact capabilities differ between variants, but the most common features [9] generate several different types of DDoS attacks: it can hold open TCP connections, send a random string of junk characters to a TCP or a UDP port, or repeatedly send TCP packets with specified flags.
Like Unix systems, Linux implements a multi-user environment where users are granted specific privileges and there is some form of access control implemented. To gain control over a Linux system or to cause any serious consequences to the system itself, the malware would have to gain root access to the system.
In February 2024, a malicious backdoor was introduced to the Linux build of the xz utility within the liblzma library in versions 5.6.0 and 5.6.1 by an account using the name "Jia Tan". [ b ] [ 4 ] The backdoor gives an attacker who possesses a specific Ed448 private key remote code execution through OpenSSH on the affected Linux system.
Agent.btz, a variant of the SillyFDC worm, [4] has the ability "to scan computers for data, open backdoors, and send through those backdoors to a remote command and control server." [5] It was originally suspected that Chinese or Russian hackers were behind it as they had used the same code that made up agent.btz before in previous attacks. In ...
Change all your passwords – Yes, it may seem like an impossible task, but it is a mandatory one. The main reason for doing this is that if one of your accounts is hacked, there’s no way to ...
On Linux servers ClamAV can be run in daemon mode, servicing requests to scan files sent from other processes. These can include mail exchange programs, files on Samba shares, or packets of data passing through a proxy server. On Linux and BSD desktops ClamAV provides on-demand scanning of individual files, directories or the whole PC. [2]