In snapd 2.27 through 2.29.2 the snap logs command could be made to call journalctl without match arguments and therefore allow unprivileged, unauthenticated users to bypass systemd-journalds access restrictions.
Weakness
The product does not handle or incorrectly handles an exceptional condition.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Snapd | Snapcraft | 2.27 (including) | 2.29.2 (including) |
| Snapd | Ubuntu | artful | * |
| Snapd | Ubuntu | devel | * |
| Snapd | Ubuntu | esm-infra-legacy/xenial | * |
| Snapd | Ubuntu | esm-infra/xenial | * |
| Snapd | Ubuntu | trusty | * |
| Snapd | Ubuntu | upstream | * |
| Snapd | Ubuntu | xenial | * |
| Snapd | Ubuntu | zesty | * |
References
- https://github.com/snapcore/snapd/pull/4194
- https://launchpad.net/bugs/1730255
- https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-14178.html
- https://github.com/snapcore/snapd/pull/4194
- https://launchpad.net/bugs/1730255
- https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-14178.html