Security Bulletin
Summary
This affects the BMC's HTTPS and SSH interfaces.
Vulnerability Details
CVEID: CVE-2024-13176
DESCRIPTION: Issue summary: A timing side-channel which could potentially allow recovering
the private key exists in the ECDSA signature computation.
Impact summary: A timing side-channel in ECDSA signature computations
could allow recovering the private key by an attacker. However, measuring
the timing would require either local access to the signing application or
a very fast network connection with low latency.
There is a timing signal of around 300 nanoseconds when the top word of
the inverted ECDSA nonce value is zero. This can happen with significant
probability only for some of the supported elliptic curves. In particular
the NIST P-521 curve is affected. To be able to measure this leak, the attacker
process must either be located in the same physical computer or must
have a very fast network connection with low latency. For that reason
the severity of this vulnerability is Low.
The FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are affected by this issue.
CWE: CWE-385: Covert Timing Channel
CVSS Source: CISA ADP
CVSS Base score: 4.1
CVSS Vector: (CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| OPENBMC | FW1060.00 - FW1060.30 |
| OPENBMC | FW1050.00 - FW1050.30 |
| OPENBMC | OP940.00 - OP940.80 |
| OPENBMC | OP910.00 - OP910.91 |
| Hardware Management Console (HMC) | OP940.00 - OP940.73 |
Remediation/Fixes
Customers with the products below should install FW1050.31(1050_089)/FW1050.40(1050_093), FW1060.31(1060_109)/FW1060.40(1060_117) or newer to remediate this vulnerability
Power 10
1) IBM Power System S1022 (9105-22A)
2) IBM Power System S1024 (9105-42A)
3) IBM Power System S1022s (9105-22B)
4) IBM Power System S1014 (9105-41B)
5) IBM Power System L1022 (9786-22H)
6) IBM Power System L1024 (9786-42H)
7) IBM Power System E1050 (9043-MRX)
8) IBM Power System S1012 (9028-21B)
Customers with the products below should install OP910.92, OP940.81 or newer to remediate this vulnerability.
Power 9
1) IBM Power System AC922 (8335-GTG)
2) IBM Power System AC922 (8335-GTC, 8335-GTW)
3) IBM Power System AC922 (8335-GTH, 8335-GTX)
Customers with the products below should install OP940.74 or newer to remediate this vulnerability.
Mowgli (HMC)
1) IBM Power Hardware Management Console (7063-CR2)
The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
20 May 2025: 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
Was this topic helpful?
Document Information
Modified date:
10 June 2025
UID
ibm17234017