In Canonical LXD before 6.8, the backup import path validates project restrictions against backup/index.yaml in the supplied tar archive but creates the instance from backup/container/backup.yaml, a separate file in the same archive that is never checked against project restrictions. An authenticated remote attacker with instance-creation permission in a restricted project can craft a backup archive where backup.yaml carries restricted settings such as security.privileged=true or raw.lxc directives, bypassing all project restriction enforcement and allowing full host compromise.

The remote Debian 12 / 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6213 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6213-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     April 15, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : lxd     CVE ID         : CVE-2026-34177 CVE-2026-34178 CVE-2026-34179

    Multiple security issues were discovered in LXD, a system container and     virtual machine manager, which could result in restriction bypass or     privilege escalation.

    For the oldstable distribution (bookworm), these problems have been fixed     in version 5.0.2-5+deb12u5.

    For the stable distribution (trixie), these problems have been fixed in     version 5.0.2+git20231211.1364ae4-9+deb13u5.

    We recommend that you upgrade your lxd packages.

    For the detailed security status of lxd please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/lxd

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6212 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6212-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     April 15, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : incus     CVE ID         : CVE-2026-34178 CVE-2026-34179

    Two security issues were discovered in Incus, a system container and     virtual machine manager, which could result in restriction bypass     or privilege escalation.

    For the stable distribution (trixie), these problems have been fixed in     version 6.0.4-2+deb13u6.

    We recommend that you upgrade your incus packages.

    For the detailed security status of incus please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/incus

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In Canonical LXD before 6.8, the backup import path validates project restrictions against     backup/index.yaml in the supplied tar archive but creates the instance from backup/container/backup.yaml,     a separate file in the same archive that is never checked against project restrictions. An authenticated     remote attacker with instance-creation permission in a restricted project can craft a backup archive where     backup.yaml carries restricted settings such as security.privileged=true or raw.lxc directives, bypassing     all project restriction enforcement and allowing full host compromise. (CVE-2026-34178)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
307619	Debian dsa-6213 : golang-github-canonical-lxd-dev - security update	Nessus	Debian Local Security Checks	Local	critical
307618	Debian dsa-6212 : golang-github-lxc-incus-dev - security update	Nessus	Debian Local Security Checks	Local	critical
306148	Linux Distros Unpatched Vulnerability : CVE-2026-34178	Nessus	Misc.	Local	critical

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