2020 buffer overflow in the sudo program

TryHackMe | Sudo Buffer Overflow In Sudo through 1.8.29, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. 2020 buffer overflow in the sudo program - Justin Ballard Sudo's pwfeedback option can be used to provide visual feedback when the user is inputting their password. Buffer Overflow Local Privilege Escalation. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. The HTTP/2 buffer overflow vulnerability (CVE-2020-11984) is officially marked as critical. Joe Vennix discovered a stack-based buffer overflow vulnerability in sudo, a program designed to provide limited super user privileges to specific users, triggerable when configured with the pwfeedback option enabled. This vulnerability was due to two logic bugs in the rendering of star characters ( * ): The program will treat line erase characters (0x00) as NUL bytes if they're sent via pipe. Networks. Room Two in the SudoVulns Series. Platform Rankings. New Sudo Vulnerability Could Allow Attackers to Obtain Full ... - 9to5Linux Heap-Based Buffer Overflow in Sudo | I0gan Learn. Apache has officially released a security notice, disclosing three security vulnerabilities (CVE-2020-9490, CVE-2020-11993, and CVE-2020-11984). The flaw can be leveraged to elevate privileges to root, even if the user is not listed in the sudoers file. If you wanted to exploit a 2020 buffer overflow in the sudo program, which CVE would you use? rootkit: a type of backdoor, software design to administrative level control or root priviledge without detection.

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