CVE编号
CVE-2021-31618利用情况
暂无补丁情况
官方补丁披露时间
2021-06-15漏洞描述
Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client with a status code indicating why the request was rejected. This rejection response was not fully initialised in the HTTP/2 protocol handler if the offending header was the very first one received or appeared in a a footer. This led to a NULL pointer dereference on initialised memory, crashing reliably the child process. Since such a triggering HTTP/2 request is easy to craft and submit, this can be exploited to DoS the server. This issue affected mod_http2 1.15.17 and Apache HTTP Server version 2.4.47 only. Apache HTTP Server 2.4.47 was never released.解决建议
建议您更新当前系统或软件至最新版,完成漏洞的修复。
参考链接 |
|
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http://httpd.apache.org/security/vulnerabilities_24.html | |
http://www.openwall.com/lists/oss-security/2021/06/10/9 | |
https://lists.apache.org/thread.html/r14b66ef0f4f569fd515a3f96cd4eb58bd9a8ff5... | |
https://lists.apache.org/thread.html/r783b6558abf3305b17ea462bed4bd66d8286643... | |
https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html | |
https://lists.fedoraproject.org/archives/list/[email protected]... | |
https://lists.fedoraproject.org/archives/list/[email protected]... | |
https://seclists.org/oss-sec/2021/q2/206 | |
https://security.gentoo.org/glsa/202107-38 | |
https://security.netapp.com/advisory/ntap-20210727-0008/ | |
https://www.debian.org/security/2021/dsa-4937 | |
https://www.oracle.com/security-alerts/cpuoct2021.html |
受影响软件情况
# | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
1 | |||||||||
---|---|---|---|---|---|---|---|---|---|
运行在以下环境 | |||||||||
应用 | apache | http_server | 1.15.17 | - | |||||
运行在以下环境 | |||||||||
应用 | apache | http_server | 2.4.47 | - | |||||
运行在以下环境 | |||||||||
系统 | alpine_3.10 | httpd | * |
Up to (excluding) 2.4.48-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.11 | httpd | * |
Up to (excluding) 2.4.48-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.12 | httpd | * |
Up to (excluding) 2.4.48-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.13 | httpd | * |
Up to (excluding) 2.4.48-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.14 | httpd | * |
Up to (excluding) 2.4.48-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.15 | httpd | * |
Up to (excluding) 2.4.48-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_edge | httpd | * |
Up to (excluding) 2.4.48-r0 |
|||||
运行在以下环境 | |||||||||
系统 | amazon_2 | httpd | * |
Up to (excluding) 2.4.46-2.amzn2 |
|||||
运行在以下环境 | |||||||||
系统 | debian_10 | httpd | * |
Up to (excluding) 2.4.38-3+deb10u5 |
|||||
运行在以下环境 | |||||||||
系统 | debian_9 | httpd | * |
Up to (excluding) 2.4.25-3+deb9u10 |
|||||
运行在以下环境 | |||||||||
系统 | fedora_33 | httpd | * |
Up to (excluding) 1.15.19-1.fc33 |
|||||
运行在以下环境 | |||||||||
系统 | fedora_34 | httpd | * |
Up to (excluding) 1.15.19-1.fc34 |
|||||
运行在以下环境 | |||||||||
系统 | opensuse_Leap_15.2 | httpd | * |
Up to (excluding) 2.4.43-lp152.2.15.1 |
|||||
运行在以下环境 | |||||||||
系统 | opensuse_Leap_15.3 | httpd | * |
Up to (excluding) 2.4.43-3.22.1 |
|||||
运行在以下环境 | |||||||||
系统 | suse_12_SP5 | httpd | * |
Up to (excluding) 2.4.23-29.74.1 |
|||||
- 攻击路径 远程
- 攻击复杂度 容易
- 权限要求 无需权限
- 影响范围 有限影响
- EXP成熟度 N/A
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 无影响
- 服务器危害 DoS
- 全网数量 N/A
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