Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, a remote unauthenticated peer can leak one direct `ByteBuf` per HTTP/2 `DATA` frame in applications that enable HTTP/2 content decompression via `DelegatingDecompressorFrameListener`. When a `DATA` frame is processed for a stream whose decompressor has already been closed, `Http2Decompressor.decompress(...)` calls `decompressor.writeInbound(data.retain())` and does not release the retained buffer on the error path, eventually exhausting direct memory and crashing the JVM.
This issue is fixed in versions 4.1.136.Final and 4.2.16.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)
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Netty Netty
cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*
|
4.1.0
|
4.1.136
|
|
Netty Netty
cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*
|
4.2.0
|
4.2.16
|
References 5
https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b
security-advisories@github.com
https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6
security-advisories@github.com
https://github.com/netty/netty/releases/tag/netty-4.1.136.Final
security-advisories@github.com
https://github.com/netty/netty/releases/tag/netty-4.2.16.Final
security-advisories@github.com
https://github.com/netty/netty/security/advisories/GHSA-93wv-jw9v-4972
security-advisories@github.com