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CWE-923

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CWE-923

Improper Restriction of Communication Channel to Intended Endpoints

Class
Incomplete

Description

The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint.

{"xhtml:p":["Attackers might be able to spoof the intended endpoint from a different system or process, thus gaining the same level of access as the intended endpoint.","While this issue frequently involves authentication between network-based clients and servers, other types of communication channels and endpoints can have this weakness."]}

Parent Weaknesses (ChildOf)

CWE-284: Improper Access Control...

Common Consequences

Scope

Integrity
Confidentiality

Impact

Gain Privileges or Assume Identity

CVE-2022-30319

S-bus functionality in a home automation product performs access control using an IP allowlist, which can be bypassed by a forged IP address.

CVE-2022-22547

A troubleshooting tool exposes a web server on a random port between 9000-65535 that could be used for information gathering

CVE-2022-4390

A WAN interface on a router has firewall restrictions enabled for IPv4, but it does not for IPv6, which is enabled by default

CVE-2012-2292

Product has a Silverlight cross-domain policy that does not restrict access to another application, which allows remote attackers to bypass the Same Origin Policy.

CVE-2012-5810

Mobile banking application does not verify hostname, leading to financial loss.

CVE-2014-1266

Chain: incorrect "goto" in Apple SSL product bypasses certificate validation, allowing Adversary-in-the-Middle (AITM) attack (Apple "goto fail" bug). CWE-705 (Incorrect Control Flow Scoping) -> CWE-561 (Dead Code) -> CWE-295 (Improper Certificate Validation) -> CWE-393 (Return of Wrong Status Code) -> CWE-300 (Channel Accessible by Non-Endpoint). The code's whitespace indentation did not reflect the actual control flow (CWE-1114) and did not explicitly delimit the block (CWE-483), which could have made it more difficult for human code auditors to detect the vulnerability.

CVE-2000-1218

DNS server can accept DNS updates from hosts that it did not query, leading to cache poisoning

Applicable Platforms

Not Language-Specific

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