Security Bulletin: Vulnerability in nghttp2 library (CVE-2023-44487) affects Power HMC

Summary

The nghttp2 library is used by Power Hardware Management Console (HMC). HMC has addressed the applicable CVE.

Vulnerability Details

CVEID:CVE-2023-44487
**DESCRIPTION:**Multiple vendors are vulnerable to a denial of service, caused by a flaw in handling multiplexed streams in the HTTP/2 protocol. By sending numerous HTTP/2 requests and RST_STREAM frames over multiple streams, a remote attacker could exploit this vulnerability to cause a denial of service due to server resource consumption.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268044 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

Remediation/Fixes

The following fixes are available on IBM Fix Central at: <http://www-933.ibm.com/support/fixcentral/&gt;

Product

|

VRMF

|

APAR

|

Remediation/Fix

—|—|—|—

Power HMC

|

V10.1.1020.0 SP3 x86

|

MB04446

|

MF71681

Power HMC

|

V10.1.1020.0 SP3 ppc

|

MB04447

|

MF71682

Power HMC

|

V10.2.1040.0 SP2 x86

|

MB04448

|

MF71683

Power HMC

|

V10.2.1040.0 SP2 ppc

|

MB04449

|

MF71684

Power HMC

|

V10.3.1050.0 SP1 x86

|

MB04450

|

MF71685

Power HMC

|

V10.3.1050.0 SP1 ppc

|

MB04451

|

MF71686

Workarounds and Mitigations

None