中危 netty-handler SniHandler 16MB 分配 (CVE-2023-34462)
CVE编号
CVE-2023-34462利用情况
暂无补丁情况
官方补丁披露时间
2023-06-23漏洞描述
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.解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 应用 | netty | netty | * | Up to (excluding) 4.1.94 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | netty | * | Up to (excluding) 4.1.33-1+deb10u2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | netty | * | Up to (including) 4.1.48-4+deb11u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | netty | * | Up to (including) 4.1.48-7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | netty | * | Up to (including) 4.1.48-7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.4 | netty-tcnative-javadoc | * | Up to (excluding) 2.0.61-150200.3.13.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.5 | netty-tcnative-javadoc | * | Up to (excluding) 2.0.61-150200.3.13.1 | |||||
- 攻击路径 本地
- 攻击复杂度 困难
- 权限要求 普通权限
- 影响范围 有限影响
- EXP成熟度 未验证
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-400 | 未加控制的资源消耗（资源穷尽） |
| CWE-770 | 不加限制或调节的资源分配 |
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