CVE-2023-34462
netty - security update
描述
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. The `SniHandler` can allocate up to 16MB of heap for each channel during the TLS handshake. When the handler or the channel does not have an idle timeout, it can be used to make a TCP server using the `SniHandler` to allocate 16MB of heap. The `SniHandler` class is a handler that waits for the TLS handshake to configure a `SslHandler` according to the indicated server name by the `ClientHello` record. For this matter it allocates a `ByteBuf` using the value defined in the `ClientHello` record. Normally the value of the packet should be smaller than the handshake packet but there are not checks done here and the way the code is written, it is possible to craft a packet that makes the `SslClientHelloHandler`. This vulnerability has been fixed in version 4.1.94.Final.
如何修補 CVE-2023-34462
要修補 CVE-2023-34462,請將受影響套件升級到下列已修補版本。
- —升級至 1:4.1.48-4+deb11u2 或更新版本
- —升級至 1:4.1.48-4+deb11u2 或更新版本
- —升級至 4.1.94.Final 或更新版本
CVE-2023-34462 正在被利用嗎?
低 — EPSS 為 2.5%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 1:4.1.48-4+deb11u2
- from 0, < 1:4.1.48-4+deb11u2
- from 0, < 4.1.94.Final
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |