jwt-go allows excessive memory allocation during header parsing

golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function's argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

不对称的资源消耗(放大攻击)

jwt-go 安全漏洞

jwt-go是golang-jwt开源的一个Go语言的JWT实现。 jwt-go 5.2.2之前版本和4.5.2之前版本存在安全漏洞，该漏洞源于parse.ParseUnverified函数在处理恶意请求时可能导致内存分配问题。

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