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CVE-2018-1333— DoS for HTTP/2 connections by crafted requests

Quick assessment

Affected
Apache Software Foundation Apache HTTP Server
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache HTTP Server是美国阿帕奇（Apache）软件基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server中存在拒绝服务漏洞。远程攻击者可通过发送特制的HTTP/2请求利用该漏洞造成拒绝服务。以下版本受到影响：Apache HTTP Server 2.4.18版本，2.4.20版本，2.4.23版本，2.4.29版本，2.4.33版本，2.4.30版本。

AI Predicted 7.5 Difficulty: Easy EPSS 17.10% · P97

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2018-1333

Vulnerability Information
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Vulnerability Title
DoS for HTTP/2 connections by crafted requests
Source: CVE Program / CVE List V5
Vulnerability Description
By specially crafting HTTP/2 requests, workers would be allocated 60 seconds longer than necessary, leading to worker exhaustion and a denial of service. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.18-2.4.30,2.4.33).
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
Apache HTTP Server 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache HTTP Server是美国阿帕奇（Apache）软件基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server中存在拒绝服务漏洞。远程攻击者可通过发送特制的HTTP/2请求利用该漏洞造成拒绝服务。以下版本受到影响：Apache HTTP Server 2.4.18版本，2.4.20版本，2.4.23版本，2.4.29版本，2.4.33版本，2.4.30版本。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache HTTP Server Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.18-2.4.30,2.4.33) -

II. Public POCs for CVE-2018-1333

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III. Intelligence Information for CVE-2018-1333

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Vendor Advisories for CVE-2018-1333 (7)

Mailing List Discussions for CVE-2018-1333 (12)

Other References for CVE-2018-1333 (2)

IV. Related Vulnerabilities

Same product: Apache HTTP Server
Same vendor: Apache Software Foundation

V. Comments for CVE-2018-1333

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