Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.sctp.SctpMessageCompletionHandler limits incomplete messages and fragment counts but not maxBufferedBytes, allowing unauthenticated peers to exhaust memory with large SCTP fragments. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 6
https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7
security-advisories@github.com
https://github.com/netty/netty/pull/17213
security-advisories@github.com
https://github.com/netty/netty/pull/17217
security-advisories@github.com
https://github.com/netty/netty/releases/tag/netty-4.1.137.Final
security-advisories@github.com
https://github.com/netty/netty/releases/tag/netty-4.2.17.Final
security-advisories@github.com
https://github.com/netty/netty/security/advisories/GHSA-2qj4-mmr9-4v2f
security-advisories@github.com