Information disclosure in JUnit4

In JUnit4 from version 4.7 and before 4.13.1, the test rule TemporaryFolder contains a local information disclosure vulnerability. 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. This vulnerability impacts you if the JUnit tests write sensitive information, like API keys or passwords, into the temporary folder, and the JUnit tests execute in an environment where the OS has other untrusted users. 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. For Java 1.7 and higher users: this vulnerability is fixed in 4.13.1. For Java 1.6 and lower users: no patch is available, you must use the workaround below. 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. For more information, including an example of vulnerable code, see the referenced GitHub Security Advisory.

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

信息暴露

Junit 信息泄露漏洞

Junit是个人开发者的一个开放源代码的Java测试框架。 JUnit4 4.13.1之前版本存在信息泄露漏洞，该漏洞源于测试规则TemporaryFolder包含一个本地信息泄露漏洞。在类似Unix的系统中，系统的临时目录在该系统上的所有用户之间共享。因此，在将文件和目录写入此目录时，默认情况下，相同系统上的其他用户都可以读取它们。此漏洞不允许其他用户覆盖这些目录或文件的内容。这纯粹是一个信息披露的漏洞。如果JUnit测试编写了敏感信息，这个漏洞就会对您造成影响。

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