VulnerabilityBleeping Computer
6.0 — HIGH
HollowByte DDoS flaw bloats OpenSSL server memory with 11-byte payload
A vulnerability dubbed HollowByte allows unauthenticated attackers to trigger a denial-of-service (DoS) condition on OpenSSL servers with a malicious payload of just 11 bytes. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A vulnerability in OpenSSL allows unauthenticated attackers to trigger a denial-of-service (DoS) condition by sending an 11-byte malicious input, causing the server to allocate considerable amounts of memory.
⚙️Technical Details
Affected Systems
NGINXApache web serversNode.jsPythonRubyPHPMySQLPostgreSQL
💥Impact Assessment
Severity: high
Who Is at Risk
Organizations using OpenSSL, particularly those with low-capacity environments
🛡️Recommended Actions
1Upgrade to a fixed version of the OpenSSL library (e.g., OpenSSL 4.0.1)
2Implement rate limiting and traffic filtering on web servers
3Regularly monitor system resources for signs of memory allocation issues
📦Affected Products
NGINXApache web serversNode.jsPythonRubyPHPMySQLPostgreSQL
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