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| Code Block | ||
|---|---|---|
| ||
protected PermissionCollection getPermissions(CodeSource cs) {
PermissionCollection pc = super.getPermissions(cs);
// Other permissions
return pc;
}
|
Exceptions
ENV03-J-EX0: It may be necessary to grant AllPermission to trusted library code so that callbacks work as expected. For example, it is common practice, and acceptable, to grant AllPermission to the optional Java packages (extension libraries):
...
Granting AllPermission to untrusted code allows it to perform privileged operations.
Rule | Severity | Likelihood | Remediation Cost | Priority | Level |
|---|---|---|---|---|---|
ENV03-J | High | Likely | Low | P27 | L1 |
Automated Detection
Static detection of potential uses of dangerous permissions is a trivial search. Automated determination of the correctness of such uses is not feasible.
| Tool | Version | Checker | Description | ||||||
|---|---|---|---|---|---|---|---|---|---|
| CodeSonar |
| JAVA.IO.PERM | Permissive File Mode (Java) |
Related Vulnerabilities
CVE-2007-5342 describes a vulnerability in Apache Tomcat 5.5.9 through 5.5.25 and 6.0.0 through 6.0.15. The security policy used in the JULI logging component failed to restrict certain permissions for web applications. An attacker could modify the log level, directory, or prefix attributes in the org.apache.juli.FileHandler handler, permitting them to modify logging configuration options and overwrite arbitrary files.
Related Guidelines
Android Implementation Details
The java.security package exists on Android for compatibility purposes only, and it should not be used. Android uses another permission mechanism for security purposes.
Bibliography
[API 2014] | Class |
Section 2.5, "Reflection" | |
Section " | |
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