CVE-2020-7238

Public Exploit

Description

Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.69% Top 30%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory netty.io
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://netty.io/news/ vendor advisory
https://github.com/jdordonezn/CVE-2020-72381/issues/1 third party advisory exploit
https://access.redhat.com/errata/RHSA-2020:0497 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00017.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/02/msg00018.html third party advisory mailing list
https://access.redhat.com/errata/RHSA-2020:0601 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0606 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0605 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0567 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0806 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0811 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0804 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0805 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00003.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TS6VX7OMXPDJIU5LRGUAHRK6MENAVJ46/ vendor advisory
https://www.debian.org/security/2021/dsa-4885 third party advisory vendor advisory
https://lists.apache.org/thread.html/rc8d554aad889d12b140d9fd7d2d6fc2e8716e9792f6f4e4b2cdc2d05%40%3Ccommits.cassandra.apache.org%3E mailing list
https://lists.apache.org/thread.html/r131e572d003914843552fa45c4398b9903fb74144986e8b107c0a3a7%40%3Ccommits.cassandra.apache.org%3E mailing list

Frequently Asked Questions

What is the severity of CVE-2020-7238?
CVE-2020-7238 has been scored as a high severity vulnerability.
How to fix CVE-2020-7238?
To fix CVE-2020-7238, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-7238 being actively exploited in the wild?
It is possible that CVE-2020-7238 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.