title: Missing System x Flash Memory Write Protection Lock Bit
description: A write protection lock bit was left unset after boot on an older generation of Lenovo and IBM System x servers, potentially allowing an attacker with administrator access to modify the subset of flash memory containing Intel Server Platform Services (SPS) and the system Flash Descriptors.
problem types: Denial of service
affected:
{
product: System x UEFI
vendor: Lenovo
versions:
lessThan: varies, status: affected, version: unspecified, versionType: custom
}
{
product: System x UEFI
vendor: IBM
versions:
lessThan: varies, status: affected, version: unspecified, versionType: custom
}
solutions: Update UEFI firmware