Directory Traversal in xmpp-http-upload

In xmpp-http-upload before version 0.4.0, when the GET method is attacked, attackers can read files which have a `.data` suffix and which are accompanied by a JSON file with the `.meta` suffix. This can lead to Information Disclosure and in some shared-hosting scenarios also to circumvention of authentication or other limitations on the outbound (GET) traffic. For example, in a scenario where a single server has multiple instances of the application running (with separate DATA_ROOT settings), an attacker who has knowledge about the directory structure is able to read files from any other instance to which the process has read access. If instances have individual authentication (for example, HTTP authentication via a reverse proxy, source IP based filtering) or other restrictions (such as quotas), attackers may circumvent those limits in such a scenario by using the Directory Traversal to retrieve data from the other instances. If the associated XMPP server (or anyone knowing the SECRET_KEY) is malicious, they can write files outside the DATA_ROOT. The files which are written are constrained to have the `.meta` and the `.data` suffixes; the `.meta` file will contain the JSON with the Content-Type of the original request and the `.data` file will contain the payload. The issue is patched in version 0.4.0.

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

对路径名的限制不恰当(路径遍历)

xmpp-http-upload 路径遍历漏洞

xmpp-http-upload是个人开发者的一个Web服务器插件。该插件允许客户端通过HTTP将文件上传到Web服务器。 xmpp-http-upload 0.4.0之前版本中存在安全漏洞，该漏洞源于当GET方法受到攻击时，攻击者可利用该漏洞读取带有.data后缀以及带有.meta后缀的JSON文件的文件。

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