Google Guava up to 29.x Temp Directory com.google.common.io.Files.createTempDir temp file

Summaryinfo

A vulnerability has been found in Google Guava up to 29.x and classified as critical. Affected by this vulnerability is the function com.google.common.io.Files.createTempDir of the component Temp Directory Handler. The manipulation leads to temp file. This vulnerability is documented as CVE-2020-8908. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Google Guava up to 29.x and classified as critical. This issue affects the function com.google.common.io.Files.createTempDir of the component Temp Directory Handler. The manipulation with an unknown input leads to a temp file vulnerability. Using CWE to declare the problem leads to CWE-377. Creating and using insecure temporary files can leave application and system data vulnerable to attack. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released 12/11/2020 as SNYK-JAVA-COMGOOGLEGUAVA-1015415. The advisory is shared at snyk.io. The identification of this vulnerability is CVE-2020-8908. Technical details are known, but no exploit is available.

Upgrading to version 30.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Google

Name

• Guava

Version

• 29.x

License

• free

Website

• Vendor: https://www.google.com/
• Product: https://github.com/google/guava/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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