google guava CVE-2020-8908 vulnerability in Google and Other Products
Published on December 10, 2020

Temp directory permission issue in Guava

product logo product logo product logo product logo
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.

NVD

Vulnerability Analysis

CVE-2020-8908 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

Creation of Temporary File With Insecure Permissions

Opening temporary files without appropriate measures or controls can leave the file, its contents and any function that it impacts vulnerable to attack.


Products Associated with CVE-2020-8908

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2020-8908 are published in these products:

Google Guava
 
Quarkus
 
Oracle Communications Cloud Native Core Network Slice Selection Function
 
Oracle Data Integrator
 
Oracle Nosql Database
 
Oracle Peoplesoft Enterprise Peopletools
 
Oracle Retail Customer Management Segmentation Foundation
 
Oracle Communications Cloud Native Core Network Repository Function
 
Oracle Primavera Unifier
 
NetApp Active Iq Unified Manager
 
Oracle Weblogic Server
 
Oracle Commerce Guided Search
 
Oracle Communications Pricing Design Center
 
Oracle
 

Affected Versions

Google LLC Guava:

Exploit Probability

EPSS
0.07%
Percentile
21.96%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.