漏洞信息
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Vulnerability Title
h2o is vulnerable to musl libc stack overflow
Vulnerability Description
h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 6b5370d, h2o is vulnerable to a Denial of Service attack when calling alloca under certain conditions. When serving static files, h2o builds the file path on stack, by calling alloca. The maximum size of the memory allocated using alloca can be as huge as ~600KB, which exceeds the default pthread stack size used by musl libc (128KB). If the amount of memory allocated by alloca exceeds the stack size, the h2o server crashes with a segmentation fault, while it tries to touch the guard page. This issue has been fixed by commit 6b5370d.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
未经控制的内存分配
Vulnerability Title
H2O 资源管理错误漏洞
Vulnerability Description
h2o是H2O公司开源的一款新一代HTTP服务器。 H2O 6b5370d之前版本存在资源管理错误漏洞,该漏洞源于调用alloca时超过默认栈大小,当处理静态文件时在栈上构建文件路径,可能导致拒绝服务攻击。
CVSS Information
N/A
Vulnerability Type
N/A