High · published January 17, 2026
⚡ A malformed RELATIVE-OID can lead to memory exhaustion in pyasn1, causing your Python application to crash like a computer running out of RAM mid-game! 💥 Picture a restaurant that keeps serving an endless string of appetizers to a single table while ignoring the rest — that’s how this vulnerability works! Excessive continuation octets can overwhelm memory and bring your whole system to a standstill. An attacker can exploit this vulnerability to flood your application with malformed data, leading to a Denial-of-Service (DoS). This means legitimate users could be left out in the cold, unable to access your service, which could spell disaster for your operations and reputation.
Picture a restaurant that keeps serving an endless string of appetizers to a single table while ignoring the rest — that’s how this vulnerability works! Excessive continuation octets can overwhelm memory and bring your whole system to a standstill. Prior to version 0.6.2, pyasn1 has a Denial-of-Service vulnerability due to improper handling of RELATIVE-OID inputs, causing memory exhaustion. The library doesn't properly validate continuation octets, allowing attackers to create inputs that unnecessarily hog memory resources.
An attacker can exploit this vulnerability to flood your application with malformed data, leading to a Denial-of-Service (DoS). This means legitimate users could be left out in the cold, unable to access your service, which could spell disaster for your operations and reputation. Update pyasn1 to version 0.6.2 or later immediately to patch this vulnerability. Consider implementing input validation and monitoring memory usage to catch any anomalies early. Don't wait for the storm to hit! You’ve got this! By taking these steps, you’ll keep your application running smoothly and protect your users! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| pyasn1/pyasn1 | < 0.6.2 | 0.6.2 |
| debian/debian_linux | all versions | — |