The IPMI 2.0 specification supports RMCP+ Authenticated Key-Exchange Protocol (RAKP) authentication, which allows remote attackers to obtain password hashes and conduct offline password guessing attacks by obtaining the HMAC from a RAKP message 2 response from a BMC.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2013-4786 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of OpenIPMI or freeipmi as shipped with Red Hat Enterprise Linux 5, 6, and 7.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 5 |
|---|---|
| Base Metrics | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | OpenIPMI | Not affected |
| Red Hat Enterprise Linux 7 | freeipmi | Not affected |
| Red Hat Enterprise Linux 6 | freeipmi | Not affected |
| Red Hat Enterprise Linux 6 | OpenIPMI | Not affected |
| Red Hat Enterprise Linux 5 | freeipmi | Not affected |
| Red Hat Enterprise Linux 5 | OpenIPMI | Not affected |
Vulmon