Security Bulletin: Vulnerabilities in Kernel affect Power Hardware Management Console

Summary

Kernel is used by Power Hardware Management Console (HMC). HMC has addressed the applicable CVEs

Vulnerability Details

Relevant CVE Information:

CVEID: CVE-2018-1000004 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by a race condition in the sound system. A remote attacker could exploit this vulnerability to cause the system to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/137756&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2018-6927 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by an integer overflow in the futex_requeue function in kernel/futex.c. By triggering a negative wake or requeue value, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/139067&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2017-1000407 DESCRIPTION: Linux Kernel, built with the KVM virtualization(CONFIG_KVM) support, is vulnerable to a denial of service, caused by improper validation of user-supplied input at the diagnostic port. By flooding the diagnostic port 0x80, a remote authenticated attacker could exploit this vulnerability to cause the system to crash.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/136235&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2017-18017 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by a use-after-free flaw in the tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c. By leveraging the presence of xt_TCPMSS in an iptables action, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/137122&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2017-15126 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by a use-after-free flaw in fs/userfaultfd.c. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause fork event to be removed from an already freed list.
CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/137626&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2017-15116 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by NULL pointer dereference in the rngapi_reset function in crypto/rng.c. By sending a specially-crafted packet, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/135735&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-8633 DESCRIPTION: Linux Kernel could allow a remote attacker to execute arbitrary code on the system, caused by an error in drivers/firewire/net.c. By sending specially-crafted fragmented packets. An attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 7.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/119632&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2017-1000410 DESCRIPTION: Linux Kernel could allow a remote attacker to obtain sensitive information, caused by a flaw when processing the incoming of L2CAP commands, ConfigRequest and ConfigResponse messages. By manipulating the code flows that precede the handling of the configuration messages, a remote attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/136155&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Power HMC V8.8.6.0
Power HMC V8.8.7.0
Power HMC V9.1.910.0

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

|

V8.8.6.0 SP3

|

MB04172

|

MH01784

Power HMC

|

V8.8.7.0 SP2 ppc

|

MB04174

|

MH01786

Power HMC

|

V8.8.7.0 SP2 x86

|

MB04173

|

MH01785

Power HMC

|

V9.1.920.1 ppc

| MB04176 | MH01788
Power HMC | V9.1.920.1 x86 | MB04175 | MH01787

Workarounds and Mitigations

None