kernel-5.19.15-200.fc36

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FEDORA-2022-d1fcad81f3

Packages in this update:

kernel-5.19.15-200.fc36

Update description:

The 5.19.15 stable kernel update contains a number of important fixes across the tree.

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Portnox adds IoT fingerprinting to network access control service

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Network security firm Portnox on Wednesday announced it is adding IoT fingerprinting features to the Portnox Cloud NAC-as-a-Service to allow companies to more easily identify and authorize devices on their networks. The IoT fingerprinting features add new device-identification techniques to the network access control product, including MAC address clustering and DHCP (Dynamic Host Configuration Protocol) gleaning. 

To read this article in full, please click here

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USN-5672-1: GMP vulnerability

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It was discovered that GMP did not properly manage memory
on 32-bit platforms when processing a specially crafted
input. An attacker could possibly use this issue to cause
applications using GMP to crash, resulting in a denial of
service.

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Recovering Passwords by Measuring Residual Heat

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Researchers have used thermal cameras and ML guessing techniques to recover passwords from measuring the residual heat left by fingers on keyboards. From the abstract:

We detail the implementation of ThermoSecure and make a dataset of 1,500 thermal images of keyboards with heat traces resulting from input publicly available. Our first study shows that ThermoSecure successfully attacks 6-symbol, 8-symbol, 12-symbol, and 16-symbol passwords with an average accuracy of 92%, 80%, 71%, and 55% respectively, and even higher accuracy when thermal images are taken within 30 seconds. We found that typing behavior significantly impacts vulnerability to thermal attacks, where hunt-and-peck typists are more vulnerable than fast typists (92% vs 83% thermal attack success if performed within 30 seconds). The second study showed that the keycaps material has a statistically significant effect on the effectiveness of thermal attacks: ABS keycaps retain the thermal trace of users presses for a longer period of time, making them more vulnerable to thermal attacks, with a 52% average attack accuracy compared to 14% for keyboards with PBT keycaps.

“ABS” is Acrylonitrile Butadiene Styrene, which some keys are made of. Others are made of Polybutylene Terephthalate (PBT). PBT keys are less vulnerable.

But, honestly, if someone can train a camera at your keyboard, you have bigger problems.

News article.

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