Security Bulletin
Summary
POWER9: In response to security issues with BMC's UDP network service, a new Power System firmware update is being released to address Common Vulnerabilities and Exposures issue number CVE 2020-25705.
Vulnerability Details
CVEID: CVE-2020-25705
DESCRIPTION: Linux Kernel could allow a remote attacker to bypass security restrictions, caused by a flaw in the way reply ICMP packets are limited. By sending a specially-crafted request, an attacker could exploit this vulnerability to bypass source port UDP randomization to scan open UDP ports.
CVSS Base score: 7.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/191785 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| 8335-GTH, 8335-GTX | OP940 |
| 7063-CR2 | OP940 |
Remediation/Fixes
Customers with the products below running OP940, install OP940.30:
1) IBM Power System AC922 (8335-GTH, 8335-GTX)
2) IBM Hardware Management Console (HMC) System Firmware (7063-CR2)
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
22 Oct 2021: 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
07 December 2021
UID
ibm16523064