Vulnerabilities > CVE-2021-21290 - Creation of Temporary File in Directory with Incorrect Permissions vulnerability in multiple products

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty before version 4.1.59.Final there is a vulnerability on Unix-like systems involving an insecure temp file. When netty's multipart decoders are used local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure. Of note, this does not impact modern MacOS Operating Systems. The method "File.createTempFile" on unix-like systems creates a random file, but, by default will create this file with the permissions "-rw-r--r--". Thus, if sensitive information is written to this file, other local users can read this information. This is the case in netty's "AbstractDiskHttpData" is vulnerable. This has been fixed in version 4.1.59.Final. As a workaround, one may specify your own "java.io.tmpdir" when you start the JVM or use "DefaultHttpDataFactory.setBaseDir(...)" to set the directory to something that is only readable by the current user.

Vulnerable Configurations

Part	Description	Count
Application	Netty Netty Netty - Netty Netty 3.2.4 Netty Netty 3.2.5 Netty Netty 3.2.6 Netty Netty 3.2.7 Netty Netty 3.2.8 Netty Netty 3.2.9 Netty Netty 3.2.10 Netty Netty 3.3.0 Netty Netty 3.3.1 Netty Netty 3.4.0 Netty Netty 3.4.1 Netty Netty 3.4.2 Netty Netty 3.4.3 Netty Netty 3.4.4 Netty Netty 3.4.5 Netty Netty 3.4.6 Netty Netty 3.5.0 Netty Netty 3.5.1 Netty Netty 3.5.2 Netty Netty 3.5.3 Netty Netty 3.5.4 Netty Netty 3.5.5 Netty Netty 3.5.6 Netty Netty 3.5.7 Netty Netty 3.5.8 Netty Netty 3.5.9 Netty Netty 3.5.10 Netty Netty 3.5.11 Netty Netty 3.5.12 Netty Netty 3.5.13 Netty Netty 3.6.0 Netty Netty 3.6.1 Netty Netty 3.6.2 Netty Netty 3.6.3 Netty Netty 3.6.4 Netty Netty 3.6.5 Netty Netty 3.6.6 Netty Netty 3.6.7 Netty Netty 3.6.8 Netty Netty 3.6.9 Netty Netty 3.6.10 Netty Netty 3.7.0 Netty Netty 3.7.1 Netty Netty 3.8.0 Netty Netty 3.8.1 Netty Netty 3.8.2 Netty Netty 3.8.3 Netty Netty 3.9.0 Netty Netty 3.9.1 Netty Netty 3.9.1.1 Netty Netty 3.9.2 Netty Netty 3.9.3 Netty Netty 3.9.4 Netty Netty 3.9.5 Netty Netty 3.9.6 Netty Netty 3.9.7 Netty Netty 3.9.8 Netty Netty 3.9.9 Netty Netty 3.10.0 Netty Netty 3.10.1 Netty Netty 3.10.2 Netty Netty 3.10.3 Netty Netty 3.10.4 Netty Netty 3.10.5 Netty Netty 3.10.6 Netty Netty 4.0.0 Netty Netty 4.0.1 Netty Netty 4.0.2 Netty Netty 4.0.3 Netty Netty 4.0.4 Netty Netty 4.0.5 Netty Netty 4.0.6 Netty Netty 4.0.7 Netty Netty 4.0.8 Netty Netty 4.0.9 Netty Netty 4.0.10 Netty Netty 4.0.11 Netty Netty 4.0.12 Netty Netty 4.0.13 Netty Netty 4.0.14 Netty Netty 4.0.15 Netty Netty 4.0.16 Netty Netty 4.0.17 Netty Netty 4.0.18 Netty Netty 4.0.19 Netty Netty 4.0.20 Netty Netty 4.0.21 Netty Netty 4.0.22 Netty Netty 4.0.23 Netty Netty 4.0.24 Netty Netty 4.0.25 Netty Netty 4.0.26 Netty Netty 4.0.27 Netty Netty 4.0.28 Netty Netty 4.0.29 Netty Netty 4.0.30 Netty Netty 4.0.31 Netty Netty 4.0.32 Netty Netty 4.0.33 Netty Netty 4.0.34 Netty Netty 4.0.35 Netty Netty 4.0.36 Netty Netty 4.0.37 Netty Netty 4.0.38 Netty Netty 4.0.39 Netty Netty 4.0.40 Netty Netty 4.0.41 Netty Netty 4.0.42 Netty Netty 4.0.43 Netty Netty 4.0.44 Netty Netty 4.0.45 Netty Netty 4.0.46 Netty Netty 4.0.47 Netty Netty 4.0.48 Netty Netty 4.0.49 Netty Netty 4.0.50 Netty Netty 4.0.51 Netty Netty 4.0.52 Netty Netty 4.0.53 Netty Netty 4.0.54 Netty Netty 4.0.55 Netty Netty 4.0.56 Netty Netty 4.1 Netty Netty 4.1.0 Netty Netty 4.1.1 Netty Netty 4.1.2 Netty Netty 4.1.3 Netty Netty 4.1.4 Netty Netty 4.1.5 Netty Netty 4.1.6 Netty Netty 4.1.7 Netty Netty 4.1.8 Netty Netty 4.1.9 Netty Netty 4.1.10 Netty Netty 4.1.11 Netty Netty 4.1.12 Netty Netty 4.1.13 Netty Netty 4.1.14 Netty Netty 4.1.15 Netty Netty 4.1.16 Netty Netty 4.1.17 Netty Netty 4.1.18 Netty Netty 4.1.19 Netty Netty 4.1.20 Netty Netty 4.1.21 Netty Netty 4.1.22 Netty Netty 4.1.23 Netty Netty 4.1.24 Netty Netty 4.1.25 Netty Netty 4.1.26 Netty Netty 4.1.27 Netty Netty 4.1.28 Netty Netty 4.1.29 Netty Netty 4.1.30 Netty Netty 4.1.31 Netty Netty 4.1.32 Netty Netty 4.1.33 Netty Netty 4.1.34 Netty Netty 4.1.35 Netty Netty 4.1.36 Netty Netty 4.1.37 Netty Netty 4.1.38 Netty Netty 4.1.39 Netty Netty 4.1.40 Netty Netty 4.1.41 Netty Netty 4.1.42 Netty Netty 4.1.43 Netty Netty 4.1.44 Netty Netty 4.1.45 Netty Netty 4.1.46 Netty Netty 4.1.47 Netty Netty 4.1.48 Netty Netty 4.1.49 Netty Netty 4.1.50 Netty Netty 4.1.51 Netty Netty 4.1.52 Netty Netty 4.1.53 Netty Netty 4.1.54 Netty Netty 4.1.55 Netty Netty 4.1.56 Netty Netty 4.1.57 Netty Netty 4.1.58	227
Application	Quarkus Quarkus Quarkus 0.0.1 Quarkus Quarkus 0.1.0 Quarkus Quarkus 0.2.0 Quarkus Quarkus 0.3.0 Quarkus Quarkus 0.4.0 Quarkus Quarkus 0.5.0 Quarkus Quarkus 0.6.0 Quarkus Quarkus 0.7.0 Quarkus Quarkus 0.8.0 Quarkus Quarkus 0.9.0 Quarkus Quarkus 0.9.1 Quarkus Quarkus 0.10.0 Quarkus Quarkus 0.11.0 Quarkus Quarkus 0.12.0 Quarkus Quarkus 0.13.0 Quarkus Quarkus 0.13.1 Quarkus Quarkus 0.13.2 Quarkus Quarkus 0.13.3 Quarkus Quarkus 0.14.0 Quarkus Quarkus 0.15.0 Quarkus Quarkus 0.16.0 Quarkus Quarkus 0.16.1 Quarkus Quarkus 0.17.0 Quarkus Quarkus 0.18.0 Quarkus Quarkus 0.19.0 Quarkus Quarkus 0.19.1 Quarkus Quarkus 0.20.0 Quarkus Quarkus 0.21.0 Quarkus Quarkus 0.21.1 Quarkus Quarkus 0.21.2 Quarkus Quarkus 0.22.0 Quarkus Quarkus 0.23.0 Quarkus Quarkus 0.23.1 Quarkus Quarkus 0.23.2 Quarkus Quarkus 0.24.0 Quarkus Quarkus 0.25.0 Quarkus Quarkus 0.26.0 Quarkus Quarkus 0.26.1 Quarkus Quarkus 0.27.0 Quarkus Quarkus 0.28.0 Quarkus Quarkus 0.28.1 Quarkus Quarkus 1.0.0 Quarkus Quarkus 1.0.1 Quarkus Quarkus 1.1.0 Quarkus Quarkus 1.1.1 Quarkus Quarkus 1.2.0 Quarkus Quarkus 1.2.1 Quarkus Quarkus 1.3.0 Quarkus Quarkus 1.3.1 Quarkus Quarkus 1.3.2 Quarkus Quarkus 1.3.3 Quarkus Quarkus 1.3.4 Quarkus Quarkus 1.4.0 Quarkus Quarkus 1.4.1 Quarkus Quarkus 1.4.2 Quarkus Quarkus 1.5.0 Quarkus Quarkus 1.5.1 Quarkus Quarkus 1.5.2 Quarkus Quarkus 1.6.0 Quarkus Quarkus 1.6.1 Quarkus Quarkus 1.7.0 Quarkus Quarkus 1.7.1 Quarkus Quarkus 1.7.2 Quarkus Quarkus 1.7.3 Quarkus Quarkus 1.7.4 Quarkus Quarkus 1.7.5 Quarkus Quarkus 1.7.6 Quarkus Quarkus 1.8.0 Quarkus Quarkus 1.8.1 Quarkus Quarkus 1.8.2 Quarkus Quarkus 1.8.3 Quarkus Quarkus 1.9.0 Quarkus Quarkus 1.9.1 Quarkus Quarkus 1.9.2 Quarkus Quarkus 1.10.0 Quarkus Quarkus 1.10.1 Quarkus Quarkus 1.10.2 Quarkus Quarkus 1.10.3 Quarkus Quarkus 1.10.4 Quarkus Quarkus 1.10.5 Quarkus Quarkus 1.11.0 Quarkus Quarkus 1.11.1 Quarkus Quarkus 1.11.2 Quarkus Quarkus 1.11.3 Quarkus Quarkus 1.11.4 Quarkus Quarkus 1.11.5 Quarkus Quarkus 1.11.6 Quarkus Quarkus 1.11.7 Quarkus Quarkus 1.12.0 Quarkus Quarkus 1.12.1 Quarkus Quarkus 1.12.2 Quarkus Quarkus 1.13.0 Quarkus Quarkus 1.13.1 Quarkus Quarkus 1.13.2 Quarkus Quarkus 1.13.3 Quarkus Quarkus 1.13.4 Quarkus Quarkus 1.13.5 Quarkus Quarkus 1.13.6 Quarkus Quarkus 1.13.7	134
Application	Oracle Oracle Banking Trade Finance Process Management 14.3.0 Oracle Banking Trade Finance Process Management 14.5.0 Oracle Banking Trade Finance Process Management 14.2.0 Oracle Banking Credit Facilities Process Management 14.3.0 Oracle Banking Credit Facilities Process Management 14.2.0 Oracle Banking Credit Facilities Process Management 14.5.0 Oracle Banking Corporate Lending Process Management 14.3.0 Oracle Banking Corporate Lending Process Management 14.2.0 Oracle Banking Corporate Lending Process Management 14.5.0 Oracle Nosql Database 19.3.12 Oracle Communications Messaging Server 8.1 Oracle Communications Design Studio 7.4.2 Oracle Communications BRM Elastic Charging Engine 12.0.0.3	13
Application	Netapp Netapp Snapcenter - Netapp Active IQ Unified Manager - Netapp Cloud Secure Agent -	4
OS	Debian Debian Debian Linux 9.0 Debian Debian Linux 10.0	2

Common Weakness Enumeration (CWE)

CWE-379 - Creation of Temporary File in Directory with Incorrect Permissions

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References