Vulnerability identifier: #VU49330

Vulnerability risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15250

CWE-ID: CWE-377

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
JUnit
Server applications / Frameworks for developing and running applications

Vendor: JUnit

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to the application is using the test rule TemporaryFolder that stores sensitive information in temporary files in the system temporary directory, accessible by other system users. A local user can read temporary files and obtain sensitive information, related to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

JUnit: 4.7 - 4.13

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External links
http://github.com/junit-team/junit4/blob/7852b90cfe1cea1e0cdaa19d490c83f0d8684b50/doc/ReleaseNotes4.13.1.md
http://github.com/junit-team/junit4/commit/610155b8c22138329f0723eec22521627dbc52ae
http://github.com/junit-team/junit4/issues/1676
http://github.com/junit-team/junit4/security/advisories/GHSA-269g-pwp5-87pp
http://junit.org/junit4/javadoc/4.13/org/junit/rules/TemporaryFolder.html
http://lists.apache.org/thread.html/r500517c23200fb2fdb0b82770a62dd6c88b3521cfb01cfd0c76e3f8b@%3Cdev.creadur.apache.org%3E
http://lists.apache.org/thread.html/r5f8841507576f595bb783ccec6a7cb285ea90d4e6f5043eae0e61a41@%3Cdev.creadur.apache.org%3E
http://lists.apache.org/thread.html/r717877028482c55acf604d7a0106af4ca05da4208c708fb157b53672@%3Ccommits.creadur.apache.org%3E
http://lists.apache.org/thread.html/r95f8ef60c4b3a5284b647bb3132cda08e6fadad888a66b84f49da0b0@%3Ccommits.creadur.apache.org%3E
http://lists.apache.org/thread.html/ra1bdb9efae84794e8ffa2f8474be8290ba57830eefe9714b95da714b@%3Cdev.pdfbox.apache.org%3E
http://lists.apache.org/thread.html/rb2771949c676ca984e58a5cd5ca79c2634dee1945e0406e48e0f8457@%3Cdev.creadur.apache.org%3E
http://lists.apache.org/thread.html/rbaec90e699bc7c7bd9a053f76707a36fda48b6d558f31dc79147dbf9@%3Cdev.creadur.apache.org%3E
http://lists.apache.org/thread.html/rc49cf1547ef6cac1be4b3c92339b2cae0acacf5acaba13cfa429a872@%3Cdev.creadur.apache.org%3E
http://lists.apache.org/thread.html/rde385b8b53ed046600ef68dd6b4528dea7566aaddb02c3e702cc28bc@%3Ccommits.creadur.apache.org%3E
http://lists.debian.org/debian-lts-announce/2020/11/msg00003.html

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.