CVE-2022-24823: Local Information Disclosure Vulnerability in io.netty:netty-codec-http

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-05-06 · updated 2026-06-17
Weakness: CWE-378

Description

Netty is an open-source, asynchronous event-driven network application framework. The package `io.netty:netty-codec-http` prior to version 4.1.77.Final contains an insufficient fix for CVE-2021-21290. 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. This only impacts applications running on Java version 6 and lower. Additionally, this vulnerability impacts code running on Unix-like systems, and very old versions of Mac OSX and Windows as they all share the system temporary directory between all users. Version 4.1.77.Final contains a patch for this vulnerability. As a workaround, specify one's own `java.io.tmpdir` when starting the JVM or use DefaultHttpDataFactory.setBaseDir(...) to set the directory to something that is only readable by the current user.

Affected products

Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
NetApp OnCommand Workflow Automation: all versions
NetApp SnapCenter: all versions
netty: before 4.1.77 — fixed in 4.1.77
Oracle Financial Services Crime And Compliance Management Studio: 8.0.8.2.0, 8.0.8.3.0

How to fix

Upgrade to a fixed version: netty 4.1.77. Check the vendor advisory for mitigations.

References

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