CVE-2024-23838 HIGH

CVE-2024-23838: TrueLayer.Client SSRF when fetching payment or payment provider

Vendor Truelayer
Product truelayer-dotnet
Weakness CWE-918 · SSRF
Published January 30, 2024
Last update August 23, 2024

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

What the vulnerability does

01Description

TrueLayer.NET is the .Net client for TrueLayer. The vulnerability could potentially allow a malicious actor to gain control over the destination URL of the HttpClient used in the API classes. For applications using the SDK, requests to unexpected resources on local networks or to the internet could be made which could lead to information disclosure. The issue can be mitigated by having strict egress rules limiting the destinations to which requests can be made, and applying strict validation to any user input passed to the `truelayer-dotnet` library. Versions of TrueLayer.Client `v1.6.0` and later are not affected.

Key dates

02Disclosure timeline

January 30, 2024 CVE published
August 23, 2024 Record updated