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cve[email protected]CVE-2021-21409
HistoryMar 30, 2021 - 3:15 p.m.

CVE-2021-21409

2021-03-3015:15:14
CWE-444
[email protected]
web.nvd.nist.gov
299
23
netty
io.netty
netty-codec-http2
request smuggling
vulnerability
http/1.1
cve-2021-21409

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

6 Medium

AI Score

Confidence

High

0.186 Low

EPSS

Percentile

96.3%

JSON

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 peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.

Affected configurations

Vulners
NVD
Node
nettynettyRange<4.1.61.Final
VendorProductVersionCPE
nettynetty*cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "netty",
    "vendor": "netty",
    "versions": [
      {
        "status": "affected",
        "version": "< 4.1.61.Final"
      }
    ]
  }
]

References

Social References

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4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

6 Medium

AI Score

Confidence

High

0.186 Low

EPSS

Percentile

96.3%

JSON
Related for CVE-2021-21409
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