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CVE-2023-45288— HTTP/2 CONTINUATION flood in net/http

Quick assessment

Affected
Go standard library net/http
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go存在安全漏洞。攻击者利用该漏洞通过发送过量的 CONTINUATION 帧来导致 HTTP/2 端点读取任意数量的标头数据。

AI Predicted 7.5 Difficulty: Easy EPSS 91.97% · P100
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I. Basic Information for CVE-2023-45288

Vulnerability Information
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Vulnerability Title
HTTP/2 CONTINUATION flood in net/http
Source: CVE Program / CVE List V5
Vulnerability Description
An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Google Go 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go存在安全漏洞。攻击者利用该漏洞通过发送过量的 CONTINUATION 帧来导致 HTTP/2 端点读取任意数量的标头数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Go standard library net/http 0 ~ 1.21.9 -
golang.org/x/net golang.org/x/net/http2 0 ~ 0.23.0 -

II. Public POCs for CVE-2023-45288

# POC Description Source Link Shenlong Link
1 None https://github.com/0xCuteSocks/cve-2023-45288 POC Details
2 PoC for CVE-2023-45288, continuation flood vulnerability https://github.com/hex0punk/cont-flood-poc POC Details
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III. Intelligence Information for CVE-2023-45288

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Vendor Advisories for CVE-2023-45288 (1)

Mailing List Discussions for CVE-2023-45288 (3)

Other References for CVE-2023-45288 (4)

IV. Related Vulnerabilities

Same product: net/http
Same vendor: Go standard library

V. Comments for CVE-2023-45288

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