CVE-2022-24823

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.

How to fix CVE-2022-24823

To remediate CVE-2022-24823, upgrade the affected package to a fixed version below.

• —no fix listed
• —upgrade to 4.1.77.Final or later

Is CVE-2022-24823 being exploited?

Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0
• from 0, < 4.1.77.Final

CVSS scores

References (8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2022-24823
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2022-24823
• PATCHgithub.com/netty/netty
• WEBgithub.com/netty/netty/commit/185f8b2756a36aaa4f973f1a2a025e7d981823f1