What is the CVSS score of CVE-2020-7238?

CVE-2020-7238 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 3.6%.

Is there a public PoC exploit available for CVE-2020-7238?

Yes, a public proof-of-concept exploit is available for CVE-2020-7238. Prioritise patching immediately. EPSS: 3.6%.

Is there a patch available for CVE-2020-7238?

Yes, a patch is available for CVE-2020-7238. Update the affected software to the latest version immediately.

Netty CVE-2020-7238

HIGH

HTTP Request/Response Smuggling (CWE-444)

2020-01-27 cve@mitre.org

Request Smuggling Information Disclosure Netty Fedora Debian Linux Jboss Enterprise Application Platform Jboss Enterprise Application Platform Text Only Advisories Openshift Application Runtimes Text Only Advisories

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Jan 27, 2020 - 17:15 nvd

HIGH 7.5

DescriptionNVD

AnalysisAI

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. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as HTTP Request/Response Smuggling (CWE-444), which allows attackers to manipulate HTTP request interpretation between frontend and backend servers. 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. Affected products include: Netty, Fedoraproject Fedora, Debian Debian Linux, Redhat Jboss Enterprise Application Platform, Redhat Jboss Enterprise Application Platform Text-Only Advisories.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Enforce strict HTTP parsing, normalize requests at proxy layer, use HTTP/2 end-to-end, reject ambiguous headers.