Vulnerability · Published Jan 30, 2024 · Assigned by GitHub_M
CVE-2024-23838TrueLayer.Client SSRF when fetching payment or payment provider
High 8.6
In plain English
A high-severity server-side request forgery in truelayer-dotnet from TrueLayer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | truelayer.client | 1.6.0 | GHSA-67m4-qxp3-j6hh |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TrueLayer | truelayer-dotnet | < 1.6.0 |
Weakness: CWE-918 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N