Basically, the SafeZone library doesn’t sufficiently randomize the two prime numbers it used to generate RSA keys. They’re too close to each other, which makes them vulnerable to recovery.
There aren’t many weak keys out there, but there are some:
So far, Böck has identified only a handful of keys in the wild that are vulnerable to the factorization attack. Some of the keys are from printers from two manufacturers, Canon and Fujifilm (originally branded as Fuji Xerox). Printer users can use the keys to generate a Certificate Signing Request. The creation date for the all the weak keys was 2020 or later. The weak Canon keys are tracked as CVE-2022-26351.
Böck also found four vulnerable PGP keys, typically used to encrypt email, on SKS PGP key servers. A user ID tied to the keys implied they were created for testing, so he doesn’t believe they’re in active use.
More Stories
Friday Squid Blogging: Squid Game Season Two Teaser
The teaser for Squid Game Season Two dropped. Blog moderation policy. Read More
Clever Social Engineering Attack Using Captchas
This is really interesting. It’s a phishing attack targeting GitHub users, tricking them to solve a fake Captcha that actually...
US Cyberspace Solarium Commission Outlines Ten New Cyber Policy Priorities
In its fourth annual report, the US Cyberspace Solarium Commission highlighted the need to focus on securing critical infrastructure and...
Cybersecurity Skills Gap Leaves Cloud Environments Vulnerable
A new report by Check Point Software highlights a significant increase in cloud security incidents, largely due to a lack...
Going for Gold: HSBC Approves Quantum-Safe Technology for Tokenized Bullions
The bank giant and Quantinuum trialed the first application of quantum-secure technology for buying and selling tokenized physical gold Read...
This Windows PowerShell Phish Has Scary Potential
Many GitHub users this week received a novel phishing email warning of critical security holes in their code. Those who...