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Security Bulletin: This Power System update is being released to address CVE 2020-10735

Security Bulletin


Summary

BMC firmware version OP910 uses Python to help serve HTTPS requests but Python is not used to process the request body, so this access vector is not vulnerable the Python long integer vulnerability. A BMC administrator who uses Python from the BMC's command line is subject to this vulnerability.

Vulnerability Details

CVEID:   CVE-2020-10735
DESCRIPTION:   Python is vulnerable to a denial of service, caused by the failure to limit amount of digits converting text to int by the int() type in PyLong_FromString(). A remote attacker could exploit this vulnerability to consume all available resources.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/235840 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
OPENBMCOP910.00 - OP910.70
OPENBMCOP910.00C - OP910.70C

Remediation/Fixes

Customers with the products below should install OP910.80 or newer to remediate this vulnerability.

Power 9
1) IBM Power System AC922 (8335-GTG)

Customers with the products below should install OP910.80C or newer to remediate this vulnerability.

Power 9
1) IBM Power System AC922 (8335-GTC, 8335-GTW)

 

Workarounds and Mitigations

Avoid using Python to convert integers longer than 4300 digits.

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

27 Mar 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:
27 March 2024

UID

ibm17144267