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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.
There are many binaries used in Linux which are read-only, and can only be modified or written to by a user of higher permissions, such as the root. When privileges are escalated, whether by genuine or malicious means – such as by using the Dirty COW exploit – the user can modify usually unmodifiable binaries and files.
This is an accepted version of this page This is the latest accepted revision, reviewed on 3 March 2025. List of software distributions using the Linux kernel This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article relies excessively on references to primary sources. Please improve this ...
Hummingbad – has infected over 10 million Android operating systems. User details are sold and adverts are tapped on without the user's knowledge thereby generating fraudulent advertising revenue. [72] NyaDrop – a small Linux backdoor compiled from a Linux shellcode to be used to infect Linux boxes with bigger size Linux malware. [73]
As of May 2022, The Ubuntu Forums has 2.1 million registered members and more than 2.2 million threads. [2] The Ubuntu Forums currently runs on the forum software vBulletin. [3] On July 20, 2013 the site was compromised, with attacker(s) both defacing the site and gaining access to "all user email addresses and hashed passwords" [4]
A directory traversal (or path traversal) attack exploits insufficient security validation or sanitization of user-supplied file names, such that characters representing "traverse to parent directory" are passed through to the operating system's file system API. An affected application can be exploited to gain unauthorized access to the file system
Prints the groups of which the user is a member hostid: Prints the numeric identifier for the current host id: Prints real or effective UID and GID: link: Creates a link to a file logname: Print the user's login name nice: Modifies scheduling priority nohup: Allows a command to continue running after logging out nproc: Queries the number of ...
BackTrack was a Linux distribution that focused on security, based on the Knoppix Linux distribution aimed at digital forensics and penetration testing use. [4] In March 2013, the Offensive Security team rebuilt BackTrack around the Debian distribution and released it under the name Kali Linux.