Security researchers find 75% of smart infusion pumps are susceptible to known vulnerabilities

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Researchers have found a major encryption flaw in 100 million Samsung Galaxy phones.

From the abstract:

In this work, we expose the cryptographic design and implementation of Android’s Hardware-Backed Keystore in Samsung’s Galaxy S8, S9, S10, S20, and S21 flagship devices. We reversed-engineered and provide a detailed description of the cryptographic design and code structure, and we unveil severe design flaws. We present an IV reuse attack on AES-GCM that allows an attacker to extract hardware-protected key material, and a downgrade attack that makes even the latest Samsung devices vulnerable to the IV reuse attack. We demonstrate working key extraction attacks on the latest devices. We also show the implications of our attacks on two higher-level cryptographic protocols between the TrustZone and a remote server: we demonstrate a working FIDO2 WebAuthn login bypass and a compromise of Google’s Secure Key Import.

Here are the details:

As we discussed in Section 3, the wrapping key used to encrypt the key blobs (HDK) is derived using a salt value computed by the Keymaster TA. In v15 and v20-s9 blobs, the salt is a deterministic function that depends only on the application ID and application data (and constant strings), which the Normal World client fully controls. This means that for a given application, all key blobs will be encrypted using the same key. As the blobs are encrypted in AES-GCM mode-of-operation, the security of the resulting encryption scheme depends on its IV values never being reused.

Gadzooks. That’s a really embarrassing mistake. GSM needs a new nonce for every encryption. Samsung took a secure cipher mode and implemented it insecurely.

News article.

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A popular target of attackers, Microsoft Active Directory will receive an extra measure of protection under a new offering announced Thursday by Attivo Networks. The company’s ADSecure-DC solution expands its Active Directory protection to non-Windows endpoints.

About a year ago Attivo introduced an endpoint product that could detect suspicious attempts to query Active Directory, intercept the queries, and steer them off course. “That was done on every Windows machine on the endpoint,” says Attivo Chief Security Advocate and CMO Carolyn Crandall, “but there are situations where you have Linux, Mac devices, or IoT devices that you can’t load the Windows agent onto, or where you don’t want to load an agent on a Windows endpoint. Now, with AD Secure Domain Controller, attacks can be detected from unmanaged devices.”

To read this article in full, please click here

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The following CIS Benchmarks have been updated or released for March 2022. We’ve highlighted the major updates below. Each Benchmark includes a full changelog that can be referenced to see all changes made.

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Study uncovers 200,000 such assets across 35 vendors

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