OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.
Exploitability
AV:NAC:HPR:HUI:RScope
S:UImpact
C:HI:LA:N4.8/CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:NAccess Control