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.
{ "vanir_signatures": [ { "id": "CVE-2020-8908-198203f0", "source": "https://github.com/google/guava/commit/fec0dbc4634006a6162cfd4d0d09c962073ddf40", "deprecated": false, "signature_version": "v1", "signature_type": "Line", "digest": { "threshold": 0.9, "line_hashes": [ "244004072759715381362783025308972603407", "191696127954200063996670176044108409736", "178977789205042937699363365843067219663", "57691104357535497419766474869340073891" ] }, "target": { "file": "guava/src/com/google/common/io/Files.java" } }, { "id": "CVE-2020-8908-d54d1950", "source": "https://github.com/google/guava/commit/fec0dbc4634006a6162cfd4d0d09c962073ddf40", "deprecated": false, "signature_version": "v1", "signature_type": "Line", "digest": { "threshold": 0.9, "line_hashes": [ "244004072759715381362783025308972603407", "191696127954200063996670176044108409736", "178977789205042937699363365843067219663", "57691104357535497419766474869340073891" ] }, "target": { "file": "android/guava/src/com/google/common/io/Files.java" } } ] }