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Security Bulletin: IBM Virtualization Engine TS7700 is susceptible to remote code execution due to the use of OpenSSH (CVE-2024-6387)

Security Bulletin


Summary

IBM Virtualization Engine TS7700 is susceptible to remote code execution due to the use of OpenSSH (CVE-2024-6387). OpenSSH is used by TS7700 to allow access from the TSSC Console by IBM authorized service personnel.

Vulnerability Details

CVEID:   CVE-2024-6387
DESCRIPTION:   OpenSSH could allow a remote attacker to execute arbitrary code on the system, caused by a signal handler race condition. By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code with root privileges on glibc-based Linux systems.
CVSS Base score: 8.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/296064 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

 

Affected Product(s)Version(s)
IBM System Storage Virtualization Engine TS77003957-VED
IBM System Storage Virtualization Engine TS77003948-VED

 

All versions of microcode for the IBM Virtualization Engine TS7700 (3957-VED, and 3948-VED) prior to and including the following are affected:

Machine TypeModelReleaseVersion
3957VEDR5.38.53.1.21
R5.48.54.1.27
3948VEDR5.38.53.1.21
R5.48.54.1.27

 

Note: End of Development (EoD) support was announced for 3957-VEC, effective 31 December 2023, after which time no more code fixes will be provided. Please see https://www.ibm.com/docs/en/announcements/2023-hardware-maintenance-services-withdrawal for more information.

 

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by visiting https://tape.ibmrcl.enterpriseappointments.com/v2/ or contacting IBM Service at 1-800-IBM-SERV to arrange an upgrade to the latest microcode version followed by the installation of the appropriate VTD_EXEC as needed. Minimum microcode versions are shown below:

Machine TypeModelReleaseFix
3957VEDR5.3Upgrade to 8.53.1.21 + VTD_EXEC.279
R5.4Upgrade to 8.54.0.68 + VTD_EXEC.279
- OR -
Upgrade to 8.54.1.27 + VTD_EXEC.279
3948VEDR5.3Upgrade to 8.53.1.21 + VTD_EXEC.279
R5.4Upgrade to 8.54.0.68 + VTD_EXEC.279
- OR -
Upgrade to 8.54.1.27 + VTD_EXEC.279

 

The minimum VTD_EXEC version is shown below:

VTD_EXEC PackageVersion
VTD_EXEC.279v1.19

 

Workarounds and Mitigations

Although IBM recommends that you upgrade to the fixes identified above, you can mitigate, but not eliminate the risk of these vulnerabilities by restricting physical and network access to the TS7700 to authorized users and IBM Service Personnel only.

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References

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Acknowledgement

Change History

01 Oct 2024: Initial Publication

*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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
01 October 2024

UID

ibm17171822