CVE-2026-23954
CVE-2026-23954 · Incus container image templating arbitrary host file read and write
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Incus is a system container and virtual machine manager. Versions 6.21.0 and below allow a user with the ability to launch a container with a custom image (e.g a member of the ‘incus’ group) to use directory traversal or symbolic links in the templating functionality to achieve host arbitrary file read, and host arbitrary file write. This ultimately results in arbitrary command execution on the host. When using an image with a metadata.yaml containing templates, both the source and target paths are not checked for symbolic links or directory traversal. This can also be exploited in IncusOS. A fix is planned for versions 6.0.6 and 6.21.0, but they have not been released at the time of publication.
CVSS 8.7 · Alta · EPSS 0,8% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: system
Productos y versiones afectados
incus
- Versiones
- >= 6.1.0, <= 6.20.0: Afectada
- <= 6.0.5: Afectada
Sin corrección publicada
incus Debian:13
- Versiones
- 6.0.4-2
- 6.0.4-2+deb13u1
- 6.0.4-2+deb13u1~bpo12+1
- 6.0.4-2+deb13u2
- 6.0.4-2+deb13u2~bpo12+1
- 6.0.4-2+deb13u3
- 6.0.4-2+deb13u3~bpo12+1
- 6.0.4-2+deb13u4~bpo12+1
- Intervalos de versiones afectados
- ECOSYSTEM: < 6.0.4-2+deb13u4
Actualiza a 6.0.4-2+deb13u4
incus Debian:14
- Versiones
- 6.0.4-2
- 6.0.4-3
- 6.0.5-1
- 6.0.5-2
- 6.0.5-3
- 6.0.5-4
- 6.0.5-5
- 6.0.5-6
- 6.0.5-7
- Intervalos de versiones afectados
- ECOSYSTEM: < 6.0.5-8
Actualiza a 6.0.5-8
lxd Debian:12
- Versiones
- 5.0.2+git20231211.1364ae4-1
- 5.0.2+git20231211.1364ae4-2
- 5.0.2+git20231211.1364ae4-3
- 5.0.2+git20231211.1364ae4-4
- 5.0.2+git20231211.1364ae4-5
- 5.0.2+git20231211.1364ae4-6
- 5.0.2+git20231211.1364ae4-7
- 5.0.2+git20231211.1364ae4-8
- 5.0.2+git20231211.1364ae4-9
- 5.0.2-5
- 5.0.2-5+deb12u1
- 5.0.2-5+deb12u2
- 5.0.2-5+deb12u3
- 5.0.2-5+deb12u4
- 5.0.2-5+deb12u5
- 5.0.2-5+deb12u6
- 5.0.2-6
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
lxd Debian:13
- Versiones
- 5.0.2+git20231211.1364ae4-9
- 5.0.2+git20231211.1364ae4-9+deb13u1
- 5.0.2+git20231211.1364ae4-9+deb13u2
- Intervalos de versiones afectados
- ECOSYSTEM: < 5.0.2+git20231211.1364ae4-9+deb13u3
Actualiza a 5.0.2+git20231211.1364ae4-9+deb13u3
lxd Ubuntu:Pro:16.04:LTS
- Versiones
- 0.20-0ubuntu4
- 0.21-0ubuntu3
- 0.21-0ubuntu5
- 0.22-0ubuntu1
- 0.22-0ubuntu2
- 0.23-0ubuntu1
- 0.23-0ubuntu2
- 0.23-0ubuntu3
- 0.24-0ubuntu2
- 0.24-0ubuntu3
- 0.24-0ubuntu4
- 0.25-0ubuntu1
- 0.26-0ubuntu2
- 0.26-0ubuntu3
- 0.27-0ubuntu1
- 0.27-0ubuntu2
- 2.0.0~beta1-0ubuntu3
- 2.0.0~beta1-0ubuntu4
- 2.0.0~beta2-0ubuntu1
- 2.0.0~beta2-0ubuntu2
- 2.0.0~beta3-0ubuntu1
- 2.0.0~beta3-0ubuntu2
- 2.0.0~beta3-0ubuntu3
- 2.0.0~beta3-0ubuntu4
- 2.0.0~beta4-0ubuntu1
- 2.0.0~beta4-0ubuntu2
- 2.0.0~beta4-0ubuntu3
- 2.0.0~beta4-0ubuntu4
- 2.0.0~beta4-0ubuntu5
- 2.0.0~beta4-0ubuntu6
- 2.0.0~beta4-0ubuntu7
- 2.0.0~rc1-0ubuntu1
- 2.0.0~rc1-0ubuntu2
- 2.0.0~rc1-0ubuntu3
- 2.0.0~rc2-0ubuntu2
- 2.0.0~rc2-0ubuntu3
- 2.0.0~rc3-0ubuntu1
- 2.0.0~rc3-0ubuntu2
- 2.0.0~rc3-0ubuntu3
- 2.0.0~rc3-0ubuntu4
- 2.0.0~rc4-0ubuntu1
- 2.0.0~rc5-0ubuntu1
- 2.0.0~rc6-0ubuntu1
- 2.0.0~rc6-0ubuntu2
- 2.0.0~rc7-0ubuntu1
- 2.0.0~rc7-0ubuntu2
- 2.0.0~rc8-0ubuntu1
- 2.0.0~rc8-0ubuntu2
- 2.0.0~rc8-0ubuntu3
- 2.0.0~rc8-0ubuntu5
- 2.0.0~rc8-0ubuntu6
- 2.0.0~rc8-0ubuntu7
- 2.0.0~rc9-0ubuntu2
- 2.0.0~rc9-0ubuntu3
- 2.0.0~rc9-0ubuntu4
- 2.0.0~rc9-0ubuntu5
- 2.0.0-0ubuntu1
- 2.0.0-0ubuntu2
- 2.0.0-0ubuntu3
- 2.0.0-0ubuntu4
- 2.0.1-0ubuntu1~16.04.1
- 2.0.2-0ubuntu1~16.04.1
- 2.0.3-0ubuntu1~ubuntu16.04.2
- 2.0.4-0ubuntu1~ubuntu16.04.1
- 2.0.5-0ubuntu1~ubuntu16.04.1
- 2.0.8-0ubuntu1~ubuntu16.04.1
- 2.0.8-0ubuntu1~ubuntu16.04.2
- 2.0.9-0ubuntu1~16.04.1
- 2.0.9-0ubuntu1~16.04.2
- 2.0.10-0ubuntu1~16.04.1
- 2.0.10-0ubuntu1~16.04.2
- 2.0.11-0ubuntu1~16.04.2
- 2.0.11-0ubuntu1~16.04.4
- 2.0.11-0ubuntu1~16.04.4+esm1
- 2.0.11-0ubuntu1~16.04.4+esm2
- 2.0.11-0ubuntu1~16.04.4+esm3
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
lxd Ubuntu:Pro:18.04:LTS
- Versiones
- 2.18-0ubuntu6
- 2.19-0ubuntu1
- 2.20-0ubuntu3
- 2.20-0ubuntu4
- 2.21-0ubuntu1
- 2.21-0ubuntu2
- 2.21-0ubuntu3
- 2.21-0ubuntu4
- 3.0.0~beta2-0ubuntu3
- 3.0.0~beta3-0ubuntu3
- 3.0.0~beta5-0ubuntu2
- 3.0.0~beta7-0ubuntu1
- 3.0.0-0ubuntu1
- 3.0.0-0ubuntu2
- 3.0.0-0ubuntu3
- 3.0.0-0ubuntu4
- 3.0.1-0ubuntu1~18.04.1
- 3.0.2-0ubuntu1~18.04.1
- 3.0.3-0ubuntu1~18.04.1
- 3.0.3-0ubuntu1~18.04.2
- 3.0.3-0ubuntu1~18.04.2+esm1
- 3.0.3-0ubuntu1~18.04.2+esm2
- 3.0.3-0ubuntu1~18.04.2+esm3
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
lxd Ubuntu:20.04:LTS
- Versiones
- 1:0.7
- 1:0.8
- 1:0.9
- 1:0.10
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
incus Ubuntu:Pro:24.04:LTS
- Versiones
- 0.4-1ubuntu1
- 0.5.1-1
- 0.5.1-3
- 0.6-1
- 6.0.0-1
- 6.0.0-1ubuntu0.1
- 6.0.0-1ubuntu0.2
- 6.0.0-1ubuntu0.2+esm1
- 6.0.0-1ubuntu0.3
- 6.0.0-1ubuntu0.3+esm1
- 6.0.0-1ubuntu0.3+esm2
- 6.0.0-1ubuntu0.3+esm3
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
incus Ubuntu:25.10
- Versiones
- 6.0.3-4
- 6.0.4-2
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
incus Ubuntu:Pro:26.04:LTS
- Versiones
- 6.0.4-2
- 6.0.5-8
- 6.0.5-8ubuntu0.26.04.1~esm1
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
Fuentes originales
- https://github.com/lxc/incus/security/advisories/GHSA-7f67-crqm-jgh7
- https://github.com/lxc/incus/blob/HEAD/internal/server/instance/drivers/driver_lxc.go#L7215
- https://github.com/lxc/incus/blob/HEAD/internal/server/instance/drivers/driver_lxc.go#L7294
- https://github.com/user-attachments/files/24473599/template_arbitrary_write.sh
- https://github.com/user-attachments/files/24473601/templates_arbitrary_write.patch
- https://nvd.nist.gov/vuln/detail/CVE-2026-23954