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

2024-01-3016:26:00

CWE-918

GitHub_M

www.cve.org

vulnerability

truelayer.net

ssrf

payment provider

information disclosure

egress rules

validation

truelayer.client

v1.6.0

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

37.3%

JSON

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.

CNA Affected

[
  {
    "vendor": "TrueLayer",
    "product": "truelayer-dotnet",
    "versions": [
      {
        "version": "< 1.6.0",
        "status": "affected"
      }
    ]
  }
]