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Security Bulletin: IBM Flex System Manager (FSM) is affected by a Pluggable Authentication Module (PAM) vulnerability (CVE-2013-7041)

Created by Vern Yetzer on
Published URL:
https://www.ibm.com/support/pages/node/629597
629597

Security Bulletin


Summary

A security vulnerability was discovered in PAM that is embedded in the IBM FSM. This bulletin addresses this vulnerabilities.

Vulnerability Details

CVEID: CVE-2013-7041
DESCRIPTION: pam_userdb module for Pam could provide weaker than expected security, caused by an error in the strncasecmp() function within the pam_userdb module for Pam on comparison of the stored hash password with the user's password hash. An attacker could exploit this vulnerability using brute-force techniques to obtain user credentials.
CVSS Base Score: 2.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/89588 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N)

Affected Products and Versions

Flex System Manager 1.3.4.x
Flex System Manager 1.3.3.x
Flex System Manager 1.3.2.x

Remediation/Fixes

IBM recommends updating the FSM using the instructions referenced in this table.

      Product
      VRMF
      APAR
      Remediation
Flex System Manager
      1.3.4.x
IT16776
Ensure the steps in Technote 761981453 are completed, and then install
fsmfix1.3.4.0_IT16772_IT16773_IT16774_IT16776
Flex System Manager
      1.3.3.x
IT16776
Ensure the steps in Technote 736218441 are completed and then install
fsmfix1.3.3.0_IT16772_IT16773_IT16774_IT16776
Flex System Manager
      1.3.2.x
IT16776
Ensure the steps in Technote 736218441 are completed and then install
fsmfix1.3.2.0_IT16772_IT16773_IT16774_IT16776

For 1.1.x.x, 1.2.x.x, 1.3.0.x and 1.3.1.x IBM recommends upgrading to a fixed, supported version/release of the product.

You should verify applying this fix does not cause any compatibility issues. The fix disables older encrypted protocols by default. If you change the default setting after applying the fix, you will expose yourself to the attack described in IT15244. IBM recommends that you review your entire environment to identify other areas where you have enabled weak encryption and take appropriate mitigation and remediation actions.

Workarounds and Mitigations

none

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References

Complete CVSS v2 Guide
On-line Calculator v2

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

6 September 2016: Original version published
28 September 2016: Updated recommended fixes

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Internal Use Only

Adv 5908 / PSIRT 79759

[{"Product":{"code":"HW94A","label":"Flex System Manager Node"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Component":"--","Platform":[{"code":"PF016","label":"Linux"}],"Version":"Version Independent","Edition":"","Line of Business":{"code":"LOB57","label":"Power"}}]

Document Information

Modified date:
17 June 2018

UID

isg3T1024221

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