CWE-1021: Improper Restriction of Rendered UI Layers or Frames
low-riskThe web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain, which can lead to user confusion about which interface the user is interacting with.
Abstraction: Base
Common Consequences
Access Control
→
Gain Privileges or Assume Identity
Detection Methods
Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
Real-World Examples (10)
| CVE | CVSS | EPSS | KEV |
|---|---|---|---|
| CVE-2023-1362 | 6.1 | 53.5% | — |
| CVE-2021-21132 | 9.6 | 18.4% | — |
| CVE-2013-2682 | 4.3 | 5.4% | — |
| CVE-2021-21139 | 6.5 | 5.0% | — |
| CVE-2022-28889 | 4.3 | 2.2% | — |
| CVE-2022-28889 | 4.3 | 2.2% | — |
| CVE-2013-2675 | 6.5 | 2.1% | — |
| CVE-2023-41897 | 8.8 | 1.9% | — |
| CVE-2023-41897 | 8.8 | 1.9% | — |
| CVE-2019-7393 | 4.3 | 1.4% | — |
0
/ 100
low-risk
Active Threat
0/50 · Minimal
Exploit Availability
0/50 · Minimal