CVE-2021-21409

CWE-444 — HTTP Request Smuggling13 documents8 sources
Severity
5.9MEDIUM
EPSS
2.5%
top 14.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
17
Netty NettyOracle JD Edwards Enterpriseone ToolsOracle Nosql Database+14 more
Timeline
PublishedMar 30
Latest updateApr 28

Description

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote…

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:NExploitability: 2.2 | Impact: 3.6

Affected Packages19 packages

▶Mavenio.netty:netty-codec-http24.0.0 — 4.1.61.Final
▶CVEListV5netty/netty< 4.1.61.Final
▶NVDnetty/netty< 4.1.61
▶Debiannetty< 1:4.1.48-4+3
▶NVDoracle/nosql_database< 21.1.12

Also affects: Debian Linux 10.0

Patches

Patch: github.com ↗Patch: www.oracle.com ↗Patch: www.oracle.com ↗

🔴Vulnerability Details

4
CVEList
Possible request smuggling in HTTP/2 due missing validation of content-length↗2021-03-30
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OSV
Possible request smuggling in HTTP/2 due missing validation of content-length↗2021-03-30
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OSV
CVE-2021-21409: Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol serve↗2021-03-30
▶
GHSA
Possible request smuggling in HTTP/2 due missing validation of content-length↗2021-03-30
▶

📋Vendor Advisories

8
Ubuntu
Netty vulnerabilities↗2023-04-28
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Oracle
Oracle Oracle Communications Risk Matrix: Policy (Netty) — CVE-2021-21409↗2022-04-15
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Red Hat
origin-aggregated-logging/elasticsearch: Incomplete fix for netty-codec-http CVE-2021-21409↗2022-02-28
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Oracle
Oracle Oracle NoSQL Database Risk Matrix: Administration (Netty) — CVE-2021-21409↗2022-01-15
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Oracle
Oracle Oracle Communications Applications Risk Matrix: OUI Installer (Netty) — CVE-2021-21409↗2021-10-15
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