No permission checks for editing/deleting records with CSV import form

Silverstripe Admin provides a basic management interface for the Silverstripe Framework. In versions on the 1.x branch prior to 1.13.19 and on the 2.x branch prior to 2.1.8, users who don't have edit or delete permissions for records exposed in a `ModelAdmin` can still edit or delete records using the CSV import form, provided they have create permissions. The likelihood of a user having create permissions but not having edit or delete permissions is low, but it is possible. Note that this doesn't affect any `ModelAdmin` which has had the import form disabled via the `showImportForm` public property. Versions 1.13.19 and 2.1.8 contain a patch for the issue. Those who have a custom implementation of `BulkLoader` should update their implementations to respect permissions when the return value of `getCheckPermissions()` is true. Those who use any `BulkLoader` in their own project logic, or maintain a module which uses it, should consider passing `true` to `setCheckPermissions()` if the data is provided by users.

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

授权机制不正确

SilverStripe Admin 安全漏洞

SilverStripe是新西兰SilverStripe公司的一套开源的编程框架和内容管理系统 (CMS)。该系统具有支持多国语言、跨平台等特点。 Silverstripe Admin 1.13.19之前的1.x版本和2.1.8之前的2.x版本存在安全漏洞，该漏洞源于没有编辑或删除权限的用户仍然可以编辑或删除记录。

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