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Xen Hypervisor Flaws Let One Malicious VM Read and Write Any Other VM's Memory

Two flaws in the Xen hypervisor allow a malicious guest virtual machine (VM) to read and write the memory of other VMs on the same host, including dom0. Dom0 is the VM that, by default, has full permissions and manages the others. Patches are out, and there is no known mitigation, the Xen Project said in an advisory on November 3. All Xen versions from 4.6 onward are vulnerable,

Xen Hypervisor Flaws Let One Malicious VM Read and Write Any Other VM's Memory

We haven't written up this one. The Hacker News has the full story — the link below goes straight to it.

Read the original at thehackernews.com →

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Postal codes are strings: test a CSV/JSON fixture round trip in Python

A postal code can look like a number without being one. If an importer converts "00123" to 123 , the leading zeros have already disappeared.

  • Postal codes can be numeric or alphanumeric with letters and spaces
  • Python script verifies CSV/JSON round trip conversion of postal codes
  • Test fixtures demonstrate string preservation of postal codes

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