CVE-2023-49783: admin Auth Bypass — Fix

Description

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.

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CVSS v3.1 Score

4.3

MEDIUM

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

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
silverstripe	admin	1.0.0 — 1.13.19
silverstripe	admin	2.0.0 — 2.1.8

References

Advisories & Patches

https://github.com/silverstripe/silverstripe-admin/security/advisories/GHSA-j3m6-gvm8-mhvw https://www.silverstripe.org/download/security-releases/CVE-2023-49783 https://github.com/silverstripe/silverstripe-admin/security/advisories/GHSA-j3m6-gvm8-mhvw https://www.silverstripe.org/download/security-releases/CVE-2023-49783

Frequently Asked Questions

What is CVE-2023-49783? +

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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2023-49783? +

CVE-2023-49783 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-49783? +

CVE-2023-49783 affects products from silverstripe, specifically: admin. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-49783? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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