A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiated remotely. The attacks complexity is rated as high. The exploitability is reported as difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness
The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mongoose | Cesanta | * | 7.20 (including) |
Potential Mitigations
- Use a mechanism that can validate the identity of the source, such as a certificate, and validate the integrity of data to ensure that it cannot be modified in transit using an Adversary-in-the-Middle (AITM) attack.
- When designing functionality of actions in the URL scheme, consider whether the action should be accessible to all mobile applications, or if an allowlist of applications to interface with is appropriate.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/500.html
- https://cwe.mitre.org/data/definitions/594.html
- https://cwe.mitre.org/data/definitions/595.html
- https://cwe.mitre.org/data/definitions/596.html