| Package | Affected versions | Patched versions |
|---|---|---|
| junit:junit | ≥ 4.7, < 4.13.1 | 4.13.1 |
| pluto | < 3.1.1 | 3.1.1 |
| junit4 | ≥ 4.7, < 4.13.1 | 4.13.1 |
| communications cloud native core policy | = 1.14.0 |
The JUnit4 test rule TemporaryFolder contains a local information disclosure vulnerability.
Example of vulnerable code:
public static class HasTempFolder {
@Rule
public TemporaryFolder folder = new TemporaryFolder();
@Test
public void testUsingTempFolder() throws IOException {
folder.getRoot(); // Previous file permissions: `drwxr-xr-x`; After fix:`drwx------`
File createdFile= folder.newFile("myfile.txt"); // unchanged/irrelevant file permissions
File createdFolder= folder.newFolder("subfolder"); // unchanged/irrelevant file permissions
// ...
}
}
On Unix like systems, the system's temporary directory is shared between all users on that system. Because of this, when files and directories are written into this directory they are, by default, readable by other users on that same system.
This vulnerability does not allow other users to overwrite the contents of these directories or files. This is purely an information disclosure vulnerability.
When analyzing the impact of this vulnerability, here are the important questions to ask:
Because certain JDK file system APIs were only added in JDK 1.7, this this fix is dependent upon the version of the JDK you are using.
If you are unable to patch, or are stuck running on Java 1.6, specifying the java.io.tmpdir system environment variable to a directory that is exclusively owned by the executing user will fix this vulnerability.
If you have any questions or comments about this advisory, please pen an issue in junit-team/junit4.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free