Critical · published December 11, 2019
CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 100.0th percentile for exploit probability.
🚨 A sneaky deserialization flaw in Progress Telerik UI for ASP.NET AJAX could let attackers execute code remotely, provided they know your secret keys! 🔥 Think of it like a delivery service that accepts any package without checking the contents. If an attacker knows the all-important passphrase for your encryption, they can send malicious instructions and your system will happily comply, thinking it’s a legitimate request. If exploited, this vulnerability could allow attackers to gain full control over your server, leading to data theft, unauthorized access, and possibly catastrophic loss. Imagine a malicious intruder walking right into your digital vault—absolutely devastating!
Think of it like a delivery service that accepts any package without checking the contents. If an attacker knows the all-important passphrase for your encryption, they can send malicious instructions and your system will happily comply, thinking it’s a legitimate request. This .NET deserialization vulnerability in the RadAsyncUpload function can be exploited when encryption keys are known, allowing attackers to craft payloads that execute arbitrary code on the server, often due to previous vulnerabilities that exposed those keys.
If exploited, this vulnerability could allow attackers to gain full control over your server, leading to data theft, unauthorized access, and possibly catastrophic loss. Imagine a malicious intruder walking right into your digital vault—absolutely devastating! To protect against this risk, upgrade to Progress Telerik UI version 2020.1.114 or later, where a default setting mitigates this issue. If you must remain on 2019.3.1023, ensure that non-default settings are adjusted to block exploitation. Don’t delay! You’ve got this! Stay vigilant and follow these steps to keep your systems secure. 🛡️