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Security exposures updating websites
This is why we stress zero trust as a fundamental concept in cyber security.Your hardware is not secure, your software is not secure, and your security products are not secure,” he says.
However, the bad news is there is currently no hardware available without the flaw to replace affected processors with.
Given that new processors and architectures can take five to 10 years to hit the market, Forrester said sacrificing performance for the microcode fixes was the best option.
The most likely way enterprises could be affected is in the exploits making it easier than ever for attackers to acquire domain administrator or other high-value credentials.
The exploits may also allow an attacker to build a map of kernel memory layout, which could then be used in another attack.
Because Meltdown violates the boundaries developers and security professionals relied on for years to keep data secure, Forrester warned that without patching systems, all the data an organisation views, processes or transfers is at risk.
Third parties that take too long to update systems will put enterprise and customer information at risk, warned Forrester, urging enterprises to cooperate and collaborate to make sure partners take this threat seriously.Enterprises that do not exercise basic hygiene by limiting access to administrators are already exposing themselves to unnecessary risk, said Forrester, warning that the likely vector for attack against a bare metal server was through exploitation of a vulnerability in an external service.“Now is the time to be extra diligent in remediating other software vulnerabilities,” said Forrester.Another concern relating to enterprise security is that Meltdown potentially makes it possible for attackers to exploit vulnerabilities that were previously mitigated by kernel address space layout randomisation (ASLR).While cloud suppliers have already taken steps to patch underlying infrastructure, Forrester said enterprises must patch all virtual machines (VMs) and containers, too.“But now, with Meltdown, such operations can be done without privilege escalation, which helps attackers significantly.Previously, an attacker was dependent on there being a local vulnerability that allowed privilege escalation,” he told Computer Weekly.Meltdown is an Intel processor-specific vulnerability that allows user processes to infer the contents of kernel memory by creating cache loads in locations based on the illegally referenced contents of the kernel memory, thereby leaking the contents.Spectre, however, is not manufacturer-specific, and nearly all modern processors have the flaw.But platform-as-a-service (Paa S) and software-as-a-service (Saa S) systems should not require any customer intervention.Paa S and Saa S providers should install the patches for customers, but the UK’s National Cyber Security Centre (NCSC) advised that if in any doubt, enterprises should check their service providers are aware of the issue and installing fixes.