CVE-2014-3488: Denial of Service in Netty
Summary
CVE-2014-3488: Denial of service in Netty. Affects io.netty:netty-handler versions < 3.9.2. Fixed in 3.9.2. How to fix ↓
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Background
Netty is a popular open-source networking framework written in Java. It provides an asynchronous event-driven network application framework for rapid development of maintainable high-performance protocol servers and clients. The 'io.netty:netty-handler' package is a core component of Netty that handles various network protocols and provides essential functionality for building network applications. However, a vulnerability has been discovered in the SslHandler component of Netty before version 3.9.2.
Vulnerability Detail
The SslHandler in Netty before 3.9.2 is susceptible to a denial of service (DoS) attack. This vulnerability can be exploited by remote attackers sending a crafted SSLv2Hello message. When the vulnerable SslHandler receives such a message, it enters an infinite loop, causing excessive CPU consumption and leading to a DoS condition. This can result in degraded performance or unavailability of the affected Netty-based network applications.
How To Fix
Minimum fixed version
3.9.2
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the recommended fix by upgrading to the patched version of Netty.
Conclusion
The SslHandler vulnerability in Netty before version 3.9.2 can be exploited by remote attackers to cause a denial of service condition. To mitigate this vulnerability, it is essential to upgrade the 'io.netty:netty-handler' package to version 3.9.2 or later. This will ensure that the SslHandler is patched and no longer susceptible to the infinite loop issue. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
Netty is an open-source networking framework written in Java. It provides an asynchronous event-driven network application framework for rapid development of maintainable high-performance protocol servers and clients.
The 'io.netty:netty-handler' package is a core component of Netty that handles various network protocols and provides essential functionality for building network applications.
This vulnerability allows remote attackers to cause a denial of service (DoS) condition in Netty-based applications. It can result in degraded performance or unavailability of the affected network applications.
To fix this vulnerability, you should upgrade the 'io.netty:netty-handler' package to version 3.9.2 or later. This version includes a patch that addresses the DoS vulnerability.
No, there is no known workaround for this vulnerability. It is crucial to apply the recommended fix by upgrading to the patched version of Netty.
References
Related vulnerabilities
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