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Creation of Temporary File With Insecure Permissions Affecting libdb-debuginfo package, versions <0:5.3.28-42.el8_4

Severity

 Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ROCKY8-LIBDBDEBUGINFO-3273531
  • published3 Feb 2023
  • disclosed8 Feb 2021
Report a new vulnerability Found a mistake?

Introduced: 8 Feb 2021

CVE-2021-21290  (opens in a new tab)
CWE-378  (opens in a new tab)
CWE-379  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 libdb-debuginfo to version 0:5.3.28-42.el8_4 or higher.
This issue was patched in RLSA-2022:5498.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libdb-debuginfo package and not the libdb-debuginfo package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1