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certCERTVU:194604
HistoryDec 12, 2012 - 12:00 a.m.

IBM Power 5 Service Processor privilege escalation vulnerability

2012-12-1200:00:00
www.kb.cert.org
21

CVSS2

7.9

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:M/Au:N/C:C/I:C/A:C

EPSS

0.029

Percentile

90.8%

Overview

IBM Power 5 Service Processor contain a vulnerability which could allow an attacker to operate with elevated privileges.

Description

IBM’s security advisory states, “A security issue has been identified on IBM Power 5 Systems such that the firewall code does not get executed in certain network configurations leading to elevated privilege. __The issue only exists on Service Processor for IBM Power 5 Systems listed __below and has not been found to exist in any other IBM System.


Impact

An attacker with access to the IBM Power 5 Service Processor could escalate their privileges allowing them to to perform administrative functions on the system.


Solution

Update

The vendor has stated that this vulnerability has been address in SF240_418_382. Users are advised to upgrade to SF240_418_382 or higher. The fix can be obtained from FixCentral by providing the MTM and current fix level.


IBM’s security advisory states the following workaround, “Configure (any) Static IP addresses on at least one Ethernet interface of the IBM Service processor.


Vendor Information

IBM’s security advisory states the following affected products and versions are affected by this vulnerability:
Platforms (MTM) Impacted: 9117-570, 9110-51A, 9111-520, 9131-52A, 9113-550, 9133-55A, 9116-561, 9111-285, 9115-505, 9110-510, 9118-575, 9123-710, 9124-720 9405-520, 9406-520, 9407-515, 9406-525, 9406-550, 9406-570


194604

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IBM Corporation Affected

Notified: October 10, 2012 Updated: December 04, 2012

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Vendor References

CVSS Metrics

Group Score Vector
Base 7.9 AV:A/AC:M/Au:N/C:C/I:C/A:C
Temporal 6.2 E:POC/RL:OF/RC:C
Environmental 1.8 CDP:LM/TD:L/CR:ND/IR:ND/AR:ND

References

<http://aix.software.ibm.com/aix/efixes/security/squadrons_advisory.asc&gt;

Acknowledgements

Thanks to Brian Smith for reporting this vulnerability.

This document was written by Michael Orlando.

Other Information

CVE IDs: CVE-2012-4856
Date Public: 2012-11-19 Date First Published:

CVSS2

7.9

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:M/Au:N/C:C/I:C/A:C

EPSS

0.029

Percentile

90.8%

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