Eclipse Jersey 2.28 to 2.33 and Eclipse Jersey 3.0.0 to 3.0.1 contains a local information disclosure vulnerability. This is due to the use of the File.createTempFile which creates a file inside of the system temporary directory with the permissions: -rw-r--r--. Thus the contents of this file are viewable by all other users locally on the system. As such, if the contents written is security sensitive, it can be disclosed to other local users.

Affected: Maven: org.glassfish.jersey.core:jersey-common

## Impact Eclipse Jersey 2.28 - 2.33 and Eclipse Jersey 3.0.0 - 3.0.1 contains a local information disclosure vulnerability. This is due to the use of the `File.createTempFile` which creates a file inside of the system temporary directory with the permissions: `-rw-r--r--`. Thus the contents of this file are viewable by all other users locally on the system. As such, if the contents written is security sensitive, it can be disclosed to other local users.

## Workaround

This issue can be mitigated by manually setting the `java.io.tmpdir` system property when launching the JVM.

## Patches

Jersey 2.34 and 3.0.2 forward sets the correct permissions on the temporary file created by Jersey.

### References - https://github.com/eclipse-ee4j/jersey/pull/4712 - [CWE-378: Creation of Temporary File With Insecure Permissions](https://cwe.mitre.org/data/definitions/378.html) - [CWE-379: Creation of Temporary File in Directory with Insecure Permissions](https://cwe.mitre.org/data/definitions/379.html)

## Similar Vulnerabilities

Similar, but not the same:

- JUnit 4 - https://github.com/junit-team/junit4/security/advisories/GHSA-269g-pwp5-87pp - Google Guava - https://github.com/google/guava/issues/4011 - Apache Ant - https://nvd.nist.gov/vuln/detail/CVE-2020-1945 - JetBrains Kotlin Compiler - https://nvd.nist.gov/vuln/detail/CVE-2020-15824 - Eclipse Jetty - https://github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6

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Original Disclosure:

> Hello…

Affected: openEuler:20.03-LTS-SP1: jersey

Jersey is the open source JAX-RS (JSR 311) production quality Reference Implementation for building RESTful Web services. Security Fix(es): Eclipse Jersey 2.28 to 2.33 and Eclipse Jersey 3.0.0 to 3.0.1 contains a local information disclosure vulnerability. This is due to the use of the File.createTempFile which creates a file inside of the system temporary directory with the permissions: -rw-r--r--. Thus the contents of this file are viewable by all other users locally on the system. As such, if the contents written is security sensitive, it can be disclosed to other local users.(CVE-2021-28168)

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