What’s Vulnerable › Vulnerabilities

CVE-2020-8908: Temp directory permission issue in Guava

Description

A temp directory creation vulnerability exists in all versions of Guava, allowing an attacker with access to the machine to potentially access data in a temporary directory created by the Guava API com.google.common.io.Files.createTempDir(). By default, on unix-like systems, the created directory is world-readable (readable by an attacker with access to the system). The method in question has been marked @Deprecated in versions 30.0 and later and should not be used. For Android developers, we recommend choosing a temporary directory API provided by Android, such as context.getCacheDir(). For other Java developers, we recommend migrating to the Java 7 API java.nio.file.Files.createTempDirectory() which explicitly configures permissions of 700, or configuring the Java runtime's java.io.tmpdir system property to point to a location whose permissions are appropriately configured.

Affected products

How to fix

Upgrade to a fixed version: Google Guava 32.0.0; Oracle Nosql Database 20.3; quarkusio quarkus 1.11.4; Maven Com.Google.Guava:Guava 32.0.0-android. Check the vendor advisory for mitigations.

References

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