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Vulnerability details: VCID-jfp9-8vq3-zyfs
Vulnerability ID VCID-jfp9-8vq3-zyfs
Aliases GHSA-xpw8-rcwv-8f8p
GMS-2023-3377
Summary io.netty:netty-codec-http2 vulnerable to HTTP/2 Rapid Reset Attack A client might overload the server by issue frequent RST frames. This can cause a massive amount of load on the remote system and so cause a DDOS attack. ### Impact This is a DDOS attack, any http2 server is affected and so you should update as soon as possible. ### Patches This is patched in version 4.1.100.Final. ### Workarounds A user can limit the amount of RST frames that are accepted per connection over a timeframe manually using either an own `Http2FrameListener` implementation or an `ChannelInboundHandler` implementation (depending which http2 API is used). ### References - https://www.cve.org/CVERecord?id=CVE-2023-44487 - https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/ - https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-400 Uncontrolled Resource Consumption
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-xpw8-rcwv-8f8p
cvssv3.1 7.5 https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3
generic_textual HIGH https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3
cvssv3.1 7.5 https://github.com/netty/netty
generic_textual HIGH https://github.com/netty/netty
cvssv3.1 7.5 https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61
generic_textual HIGH https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61
cvssv3.1 7.5 https://github.com/netty/netty/security/advisories/GHSA-xpw8-rcwv-8f8p
cvssv3.1_qr HIGH https://github.com/netty/netty/security/advisories/GHSA-xpw8-rcwv-8f8p
generic_textual HIGH https://github.com/netty/netty/security/advisories/GHSA-xpw8-rcwv-8f8p
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2023-44487
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2023-44487
cvssv3.1 7.5 https://www.cve.org/CVERecord?id=CVE-2023-44487
generic_textual HIGH https://www.cve.org/CVERecord?id=CVE-2023-44487
Reference id Reference type URL
https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3
https://github.com/netty/netty
https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61
https://github.com/netty/netty/security/advisories/GHSA-xpw8-rcwv-8f8p
https://nvd.nist.gov/vuln/detail/CVE-2023-44487
https://www.cve.org/CVERecord?id=CVE-2023-44487
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

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none

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low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/netty/netty
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

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none

high

low

none

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low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/netty/netty/security/advisories/GHSA-xpw8-rcwv-8f8p
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-44487
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.cve.org/CVERecord?id=CVE-2023-44487
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2025-07-01T12:13:38.512450+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/10/GHSA-xpw8-rcwv-8f8p/GHSA-xpw8-rcwv-8f8p.json 36.1.3