This Power System update is being released to address

IBM Power Systems Firmware FW1060.00 through FW1060.81, OP940.00 through OP940.A2, OP910.00 through OP910.95, and OP940.00 through OP940.82 could allow a remote attacker to cause a denial of service due to improper validation of input length.

This Power System update is being released to address

IBM Power Systems Firmware FW1060.00 through FW1060.81, OP940.00 through OP940.A2, OP910.00 through OP910.95, and  OP940.00 through OP940.82 could allow a remote attacker to cause a denial of service due to improper restriction of excessive computational resources.

Power System Buffer Overflow

IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 - OP940.81 (Power HMC) is affected by a vulnerability in host firmware configuration parsing. An attacker with service-level access to the BMC/FSP can supply specially crafted configuration data, compromising the host firmware boot stage and everything subsequently loaded by it, resulting in a confidentiality, integrity, and availability impact to the managed system.

Power System Out-of-bounds Write

Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1, and OP940.00 - OP940.81 is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the BMC/FSP can exploit this vulnerability, allowing arbitrary code to be executed in the host firmware runtime, giving full control over the managed system, resulting in a confidentiality, integrity, and availability impact to the managed system.

Power System Incorrect Authorization

IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 - OP940.81 (Power HMC) is affected by a vulnerability in the interface between the BMC/FSP and the host system. An attacker with service account or root access to the BMC/FSP can write arbitrary data to hardware control registers, allowing full control over the host system and all hosted partitions, resulting in a confidentiality, integrity, and availability impact.

Power System Integer Overflow

IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 through OP940.81 (Power HMC) is affected by a vulnerability in the interface between the BMC/FSP and the host system. An attacker with service account or root access to the BMC/FSP can read and write arbitrary regions of host system memory, giving full control over the host system and all hosted partitions, resulting in a confidentiality, integrity, and availability impact.

Power System Out-of-bounds Read

IBM Power Systems Firmware FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 - OP940.81 (Power HMC) is affected by a vulnerability in host firmware NVRAM parsing. An attacker with root access to a guest partition on an OpenPOWER system can write a specially crafted NVRAM image, causing the host firmware boot stage to crash with possible memory corruption. This condition persists until operator intervention — clearing NVRAM via the service processor — to restore normal operation. This vulnerability only affects OpenPOWER systems; systems running PowerVM are not affected. Successful exploitation results in an integrity and availability impact to the managed system.

IBM Hardware Management Console - Power Systems command execution

IBM Hardware Management Console - Power Systems V10.2.1030.0 and V10.3.1050.0 could allow a local user to execute commands locally due to improper validation of libraries of an untrusted source.

IBM Hardware Management Console - Power Systems command execution

IBM Hardware Management Console - Power Systems V10.2.1030.0 and V10.3.1050.0 could allow a local user to execute commands as a privileged user due to execution of commands with unnecessary privileges.

IBM Hardware Management Console - Power Systems cross-site scripting

IBM Hardware Management Console - Power 10.3.1050.0 and 11.1.1110.0 is vulnerable to stored cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

IBM Power Hardware Management Console directory traversal

IBM Power Hardware Management Console V10.3.1050.0 could allow an authenticated user to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.

IBM Reliable Scalable Cluster Technology could allow a local user to escalate their privileges to gain root access. IBM Reference #: 1998459.

util-linux: Extended partition loop in MBR partition table leads to DOS

The parse_dos_extended function in partitions/dos.c in the libblkid library in util-linux allows physically proximate attackers to cause a denial of service (memory consumption) via a crafted MSDOS partition table with an extended partition boot record at zero offset.

IBM Power Hardware Management Console (HMC) 7R3.5.0 before SP4, 7R7.1.0 and 7R7.2.0 before 7R7.2.0 SP3, and 7R7.3.0 before SP2, and Systems Director Management Console (SDMC) 6R7.3.0 before SP2, does not properly restrict the VIOS viosrvcmd command, which allows local users to gain privileges via vectors involving a (1) $ (dollar sign) or (2) & (ampersand) character.

Cross-site scripting (XSS) vulnerability in the Help link in the login panel in IBM Power Hardware Management Console (HMC) 7R7.1.0 before SP4, 7R7.2.0 before SP2, and 7R7.3.0 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

IBM OPENBMC OP920, OP930, and OP940 could allow an unauthenticated user to obtain sensitive information. IBM X-Force ID: 212047.

BMC firmware (IBM Power System S821LC Server (8001-12C) OP825.50) configuration changed to allow an authenticated user to open an insecure communication channel which could allow an attacker to obtain sensitive information using man in the middle techniques. IBM X-Force ID: 205267.

IBM Power Hardware Management Console cross-site scripting

IBM Power HMC 7.1.0 through 7.8.0 and 7.3.5 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.  IBM X-Force ID:  91163.