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Security Bulletin: IBM BladeCenter Advanced Management Module (AMM) is affected by Linux kernel vulnerability (CVE-2019-11477)

Security Bulletin


Summary

IBM BladeCenter Advanced Management Module (AMM) has addressed the following Linux kernel vulnerability.

Vulnerability Details

CVEID:   CVE-2019-11477
DESCRIPTION:   Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit 3b4929f65b0d8249f19a50245cd88ed1a2f78cff.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/162662 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

Product(s)

Version

IBM BladeCenter Advanced Management Module (AMM)

bpet

IBM BladeCenter T Advanced Management Module (AMM)

bbet

 


Remediation/Fixes

Firmware fix versions are available on Fix Central:  http://www.ibm.com/support/fixcentral/

Product(s)

Fixed Version

IBM BladeCenter Advanced Management Module (AMM)
(ibm_fw_amm_bpet68m-3.68m_anyos_noarch)

bpet68m-3.68m

IBM BladeCenter T Advanced Management Module (AMM)
(ibm_fw_amm_bbet68m-3.68m_anyos_noarch)

bbet68m-3.68m

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Lenovo Product Security Advisories

Change History

13 Jan 2020: 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:
13 January 2020

Initial Publish date:
13 January 2020

UID

ibm11171528

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