漏洞信息
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Vulnerability Title
WeeChat has a Decompression Bomb in Relay WebSocket (DoS)
Vulnerability Description
WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relay_websocket_inflate() has no upper bound on output size. An authenticated relay user can send a small compressed WebSocket frame (~100 bytes) that decompresses to gigabytes, exhausting all server memory and crashing the entire WeeChat process. The api protocol enables permessage-deflate and requires authentication before WebSocket upgrade. Version 4.9.1 patches the issue.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Vulnerability Title
WeeChat 资源管理错误漏洞
Vulnerability Description
WeeChat是WeeChat团队开源的一款可扩展的即时聊天客户端应用程序。 WeeChat 4.3.0版本至4.9.0版本存在资源管理错误漏洞,该漏洞源于WebSocket permessage-deflate解压缩函数relay_websocket_inflate()对输出大小没有上限,可能导致经过身份验证的中继用户发送小的压缩WebSocket帧,耗尽服务器内存并崩溃整个WeeChat进程,造成拒绝服务。
CVSS Information
N/A
Vulnerability Type
N/A