In Canonical LXD versions 4.12 through 6.7, the doCertificateUpdate function in lxd/certificates.go does not validate the Type field when handling PUT/PATCH requests to /1.0/certificates/{fingerprint} for restricted TLS certificate users, allowing a remote authenticated attacker to escalate privileges to cluster admin.

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 versions 4.12 through 6.7, the doCertificateUpdate function in lxd/certificates.go does     not validate the Type field when handling PUT/PATCH requests to /1.0/certificates/{fingerprint} for     restricted TLS certificate users, allowing a remote authenticated attacker to escalate privileges to     cluster admin. (CVE-2026-34179)

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

ID	Name	Product	Family	Severity
307619	Debian dsa-6213 : golang-github-canonical-lxd-dev - security update	Nessus	Debian Local Security Checks	critical
307618	Debian dsa-6212 : golang-github-lxc-incus-dev - security update	Nessus	Debian Local Security Checks	critical
306151	Linux Distros Unpatched Vulnerability : CVE-2026-34179	Nessus	Misc.	critical

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