// For flags

CVE-2024-23838

TrueLayer.Client SSRF when fetching payment or payment provider

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

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.

TrueLayer.NET es el cliente .Net para TrueLayer. La vulnerabilidad podría permitir que un actor malintencionado obtenga control sobre la URL de destino del HttpClient utilizado en las clases API. Para las aplicaciones que utilizan el SDK, se podrían realizar solicitudes a recursos inesperados en redes locales o a Internet, lo que podría dar lugar a la divulgación de información. El problema se puede mitigar teniendo reglas de salida estrictas que limiten los destinos a los que se pueden realizar las solicitudes y aplicando una validación estricta a cualquier entrada del usuario pasada a la librería "truelayer-dotnet". Las versiones de TrueLayer.Client `v1.6.0` y posteriores no se ven afectadas.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-01-22 CVE Reserved
  • 2024-01-30 CVE Published
  • 2024-02-09 EPSS Updated
  • 2024-08-23 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-918: Server-Side Request Forgery (SSRF)
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Truelayer
Search vendor "Truelayer"
 Truelayer.net
Search vendor "Truelayer" for product "Truelayer.net"
 < 1.6.0
Search vendor "Truelayer" for product "Truelayer.net" and version " < 1.6.0"
-
Affected