Concorde CSRF vulnerability due to insecure configuration of authentication cookie attributes

Concorde, formerly know as Nexkey, is a fork of the federated microblogging platform Misskey. Due to a lack of CSRF countermeasures and improper settings of cookies for MediaProxy authentication, there is a vulnerability that allows MediaProxy authentication to be bypassed. In versions prior to 12.25Q1.1, the authentication cookie does not have the SameSite attribute. This allows an attacker to bypass MediaProxy authentication and load any image without restrictions under certain circumstances. In versions prior to 12.24Q2.3, this cookie was also used to authenticate the job queue management page (bull-board), so bull-board authentication is also bypassed. This may enable attacks that have a significant impact on availability and integrity. The affected versions are too old to be covered by this advisory, but the maintainers of Concorde strongly recommend not using older versions. Version 12.25Q1.1 contains a patch. There is no effective workaround other than updating.

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

跨站请求伪造(CSRF)

Concorde 跨站请求伪造漏洞

Concorde（Nexkey）是nexryai个人开发者的一个应用程序。 Concorde 12.24Q4.2版本存在跨站请求伪造漏洞，该漏洞源于缺少CSRF对策和cookie设置不当，会导致攻击者可绕过MediaProxy身份验证加载任何图像。

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