Weakness · Medium

CWE-110: Struts: Validator Without Form Field

What it is

Validation fields that do not appear in forms they are associated with indicate that the validation logic is out of date.

MITRE CWE 4.19.1

Severity (our rating)
Medium
Likelihood of exploit
Not rated by MITRE
Introduced during
Implementation, Operation
Exploited in the wild
No CVE in CISA's catalog

In more detail

It is easy for developers to forget to update validation logic when they make changes to an ActionForm class. One indication that validation logic is not being properly maintained is inconsistencies between the action form and the validation form. Although J2EE applications are not generally susceptible to memory corruption attacks, if a J2EE application interfaces with native code that does not perform array bounds checking, an attacker may be able to use an input validation mistake in the J2EE application to launch a buffer overflow attack.

What an attacker can do

  • Other (Other)

How to prevent it

MITRE lists no specific mitigation for this weakness. Treat it like its parent weaknesses below: validate input, keep the design simple and review the code where it could appear.

How to find it

  • Automated Static Analysis. To find the issue in the implementation, manual checks or automated static analysis could be applied to the XML configuration files.
  • Manual Static Analysis. To find the issue in the implementation, manual checks or automated static analysis could be applied to the XML configuration files.

CWE-110 on MITRE's CWE site

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Source: MITRE Common Weakness Enumeration, CWE version 4.19.1. CWE is a trademark of The MITRE Corporation.