Temp directory permission issue in Guava

Summary

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.

Timeline

1. Dec 10, 2020, 10:10 PM UTCCVE published
2. Aug 4, 2024, 10:12 AM UTCRecord last updated

Affected versions

• Google LLC Guava

  From 1.0 · fixed in 32.0

• com.google.guava:guavaMaven

  fixed in 32.0.0-android

References 25