CVE-2026-33897
CriticalSummary
Incus to menedżer kontenerów systemowych i maszyn wirtualnych. W wersjach przed 6.23.0 pliki szablonów instancji mogły być wykorzystane do dowolnego odczytu lub zapisu jako root na serwerze hosta, co wynika z błędnej implementacji mechanizmu izolacji chroot w szablonach pongo2.
Risk Assessment
Organizacja jest narażona na nieautoryzowany dostęp do całego systemu plików z uprawnieniami roota, co może prowadzić do poważnych naruszeń bezpieczeństwa i utraty danych.
Recommendation
Zaleca się aktualizację do wersji 6.23.0 lub nowszej, aby załatać tę podatność i zabezpieczyć system przed nieautoryzowanym dostępem.
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Original NVD description (English source)
Incus is a system container and virtual machine manager. Prior to version 6.23.0, instance template files can be used to cause arbitrary read or writes as root on the host server. Incus allows for pongo2 templates within instances which can be used at various times in the instance lifecycle to template files inside of the instance. This particular implementation of pongo2 within Incus allowed for file read/write but with the expectation that the pongo2 chroot feature would isolate all such access to the instance's filesystem. This was allowed such that a template could theoretically read a file and then generate a new version of said file. Unfortunately the chroot isolation mechanism is entirely skipped by pongo2 leading to easy access to the entire system's filesystem with root privileges. Version 6.23.0 patches the issue.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

