Skip to main content

Kernel Side-Channel Attacks- Red Hat.

Red Hat has been made aware of multiple microarchitectural (hardware) implementation issues affecting many modern microprocessors, requiring updates to the Linux kernel, virtualization-related components, and/or in combination with a microcode update.  An unprivileged attacker can use these flaws to bypass conventional memory security restrictions in order to gain read access to privileged memory that would otherwise be inaccessible. There are 3 known CVEs related to this issue in combination with Intel, AMD, and ARM architectures. Additional exploits for other architectures are also known to exist. These include IBM System Z,  POWER8 (Big Endian and Little Endian), and POWER9 (Little Endian).


Impact:-
The following Red Hat product versions are impacted:
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Atomic Host
  • Red Hat Enterprise MRG 2
  • Red Hat OpenShift Online v2
  • Red Hat OpenShift Online v3
  • Red Hat Virtualization (RHEV-H/RHV-H)
  • Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno)
  • Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL7
  • Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) director for RHEL7
  • Red Hat OpenStack Platform 8.0 (Liberty)
  • Red Hat OpenStack Platform 8.0 (Liberty) director
  • Red Hat OpenStack Platform 9.0 (Mitaka)
  • Red Hat OpenStack Platform 9.0 (Mitaka) director
  • Red Hat OpenStack Platform 10.0 (Newton)
  • Red Hat OpenStack Platform 11.0 (Ocata)
  • Red Hat OpenStack Platform 12.0 (Pike)

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

"kerberos: the specified credentials were rejected by the server", "unreachable": true" Ansible

Hello Friends, I was getting following Error while deploying my Ansible script, Basically my credential were getting rejected by server. SSH password: PLAY [Playbook_Name] ***************************************************************02:00:30 TASK [Gathering Facts] *********************************************************02:00:30 fatal: [Server_Inventory_Name]: UNREACHABLE! => {"changed": false, "msg": "kerberos: the specified credentials were rejected by the server", "unreachable": true} PLAY RECAP *********************************************************************02:00:30 Server_Inventory_Name    : ok=0    changed=0    unreachable=1   failed=0  It was resolved using one additional parameter in Inventory  i.e  "ansible_winrm_server_cert_vaildation:ignore"
1 comment
Read more

NBSUTIL commands

Frustrated with syntax finding hence decided to post all NBSTLUTIL related commands so people will not face same problem. Common SLP Related Commands Show EMM Image list of Images that were backed up to an SLP STU [ -I / -U ] nbstlutil list nbstlutil list –lifecycle <name> nbstlutil list –backupid <id_value> nbstlutil list -image_state <value> nbstlutil list -copy_state <value> nbstlutil list -frag_state <value> nbstlutil list –mediaid <media_id>_–state 3 Activate /Inactivate SLP operations nbstlutil inactive –lifecycle <lifecycle name> nbstlutil inactive –backupid <backupid> nbstlutil active –lifecycle <lifecycle name> nbstlutil active –backupid <backupid> Cancel pending operations on selected image nbstlutil cancel -backupid <backupid> nbstlutil cancel -lifecycle <lifecycle> Show status on Incomplete copies of Lifecycle Managed images nbstlutil stlilist –lifecycle <lifecycle name> nbstlutil stlil...
Post a Comment
Read more

Configure Timeout and Reconnection Settings for Remote Desktop Services Sessions

Configure Timeout and Reconnection Settings for Remote Desktop Services Sessions On the RD Session Host server, open Remote Desktop Session Host Configuration. To open Remote Desktop Session Host Configuration, click  Start , point to  Administrative Tools , point to  Remote Desktop Services , and then click  Remote Desktop Session Host Configuration . Under  Connections , right-click the name of the connection, and then click  Properties . In the  Properties  dialog box for the connection, on the  Sessions  tab, select the following options as necessary: Select the  Override user settings  check box, and then set timeout settings for  End a disconnected session ,  Active session limit , and  Idle session limit . Select the  Override user settings  check box, and then select one of the following reconnection settings:  Disconnect from session  or  End session . Cli...
Post a Comment
Read more