The lxc-sshd template (templates/lxc-sshd.in) in LXC before 1.0.0.beta2 uses read-write permissions when mounting /sbin/init, which allows local users to gain privileges by modifying the init file.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2013-6441 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of libvirt (which includes lxc) as shipped with Red Hat Enterprise Linux 6 as they do not include the template file lxc-sshd.in.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 6 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:S/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | Single |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | libvirt | Not affected |
| Red Hat Enterprise Linux 6 | libvirt | Not affected |
Vulmon