IPMI v2.0 Password Hash Disclosure

high Nessus Plugin ID 80101
New! Plugin Severity Now Using CVSS v3

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Synopsis

The remote host supports IPMI version 2.0.

Description

The remote host supports IPMI v2.0. The Intelligent Platform Management Interface (IPMI) protocol is affected by an information disclosure vulnerability due to the support of RMCP+ Authenticated Key-Exchange Protocol (RAKP) authentication. A remote attacker can obtain password hash information for valid user accounts via the HMAC from a RAKP message 2 response from a BMC.

Solution

There is no patch for this vulnerability; it is an inherent problem with the specification for IPMI v2.0. Suggested mitigations include :

- Disabling IPMI over LAN if it is not needed.

- Using strong passwords to limit the successfulness of off-line dictionary attacks.

- Using Access Control Lists (ACLs) or isolated networks to limit access to your IPMI management interfaces.

See Also

http://fish2.com/ipmi/remote-pw-cracking.html

Plugin Details

Severity: High

ID: 80101

File Name: ipmi_passhash_disclosure.nasl

Version: 1.7

Type: remote

Family: General

Published: 12/18/2014

Updated: 6/12/2020

Dependencies: ipmi_supported_versions.nbin

Risk Information

CVSS Score Source: CVE-2013-4786

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: AV:N/AC:L/Au:N/C:C/I:N/A:N

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 7/2/2013

Reference Information

CVE: CVE-2013-4786

BID: 61076