CVE-2022-24823

moderate-risk
Published 2022-05-06

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.

Do I need to act?

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0.40% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (7)

Affected Vendors

Oracle Netapp Netty

References (10)

Patch https://github.com/netty/netty/commit/185f8b2756a36aaa4f973f1a2a025e7d981823f1
Exploit https://github.com/netty/netty/security/advisories/GHSA-269q-hmxg-m83q
Exploit https://github.com/netty/netty/security/advisories/GHSA-5mcr-gq6c-3hq2
Third Party Advisory https://security.netapp.com/advisory/ntap-20220616-0004/
Patch https://www.oracle.com/security-alerts/cpujul2022.html
Patch https://github.com/netty/netty/commit/185f8b2756a36aaa4f973f1a2a025e7d981823f1
Exploit https://github.com/netty/netty/security/advisories/GHSA-269q-hmxg-m83q
Exploit https://github.com/netty/netty/security/advisories/GHSA-5mcr-gq6c-3hq2
Third Party Advisory https://security.netapp.com/advisory/ntap-20220616-0004/
Patch https://www.oracle.com/security-alerts/cpujul2022.html
34
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 14/34 · Moderate