Leakage-Resilient Extractors against Number-On-Forehead Protocols

Given a sequence of $N$ independent sources $\mathbfX1,\mathbfX2,\dots,\mathbfXN\sim\0,1^n$, how many of them must be good i.e., contain some min-entropy in order to extract a uniformly random string? This question was first raised by Chattopadhyay, Goodman, Goyal and Li STOC '20, motivated by...

CVE-2024-58036

Net::Dropbox::API 1.9 and earlier for Perl uses the rand function as the default source of entropy, which is not cryptographically secure, for cryptographic functions. Specifically Net::Dropbox::API uses the Data::Random library which specifically states that it is "Useful mostly for test...

PT-2024-26768

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to the Linux kernel's random number generator RNG on CoCo systems. The CoCo threat model means that the VM host cannot be trusted and may actively work against guest...

c-ares: Insufficient randomness in generation of DNS query IDs

A vulnerability was found in c-ares. This issue occurs when /dev/urandom or RtlGenRandom are unavailable, c-ares will use rand to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand, so it will generate predictable output...

A Critical Random Number Generator Flaw Affects Billions of IoT Devices

A critical vulnerability has been disclosed in hardware random number generators used in billions of Internet of Things IoT devices whereby it fails to properly generate random numbers, thus undermining their security and putting them at risk of attacks. "It turns out that these 'randomly' chosen...

Going in-depth on the Windows 10 random number generation infrastructure

Throughout the years, we've had ongoing conversations with researchers, developers, and customers around our implementation of certain security features within the Windows operating system. Most recently, we have open-sourced our cryptography libraries as a way to contribute and show our continue...

Entropy sources information leakage

Entropy sources can be used for keystrokes timing attack...