CVE-2026-34990
Gravedad CVSS v4.0:
MEDIA
Tipo:
CWE-287
Autenticación incorrecta
Fecha de publicación:
03/04/2026
Última modificación:
03/04/2026
Descripción
*** Pendiente de traducción *** OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.
Impacto
Puntuación base 4.0
5.00
Gravedad 4.0
MEDIA