CVE-2015-2687
Description
A flaw was found in OpenStack Compute (nova) in the way it handles failed live migrations. Under certain conditions, a failed live migration can lead to an unintended loss of access control, allowing a local user to gain unauthorized access to VM volumes that should not be accessible to them. This occurs because connection information for block devices is not correctly rolled back during the failure recovery process.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v2 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 1 | 1.9 | N/A |
| Attack Vector | Local | Local | N/A |
| Access Complexity | High | Medium | N/A |
| Authentication | Single | None | N/A |
| Confidentiality Impact | Partial | Partial | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | None | None | N/A |
Vector
Red Hat: AV:L/AC:H/Au:S/C:P/I:N/A:N
NVD: AV:L/AC:M/Au:N/C:P/I:N/A:N
Understanding the Weakness (CWE)
Other
Technical Impact: Varies by Context; Gain Privileges or Assume Identity
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc.
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