CVE-2026-33898
HighSummary
Incus to menedżer kontenerów systemowych i maszyn wirtualnych. W wersjach przed 6.23.0, serwer WWW uruchamiany przez `incus webui` nieprawidłowo weryfikuje token uwierzytelniający, co pozwala na akceptację nieprawidłowych wartości.
Risk Assessment
Atakujący, który ma dostęp do lokalnego serwera WWW, może uzyskać dostęp do Incus z uprawnieniami użytkownika, który uruchomił `incus webui`. Może to prowadzić do eskalacji uprawnień lub dostępu do zasobów systemowych przez zdalnego atakującego.
Recommendation
Zaleca się aktualizację do wersji 6.23.0 lub nowszej, aby poprawić weryfikację tokenów uwierzytelniających w `incus webui`.
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Original NVD description (English source)
Incus is a system container and virtual machine manager. Prior to version 6.23.0, the web server spawned by `incus webui` incorrectly validates the authentication token such that an invalid value will be accepted. `incus webui` runs a local web server on a random localhost port. For authentication, it provides the user with a URL containing an authentication token. When accessed with that token, Incus creates a cookie persisting that token without needing to include it in subsequent HTTP requests. While the Incus client correctly validates the value of the cookie, it does not correctly validate the token when passed int the URL. This allows for an attacker able to locate and talk to the temporary web server on localhost to have as much access to Incus as the user who ran `incus webui`. This can lead to privilege escalation by another local user or an access to the user's Incus instances and possibly system resources by a remote attack able to trick the local user into interacting with
Vulnerability data from NVD (NIST) · CISA KEV · EPSS