安全公告/【CVE-2019-9517】

基本信息

漏洞名称:
受影响操作系统:桌面操作系统
危险等级:高危
影响源码包:apache2
CVSS评分:7.5
发现日期:2023-07-20
修复版本:2.4.38-3+deb10u4

漏洞描述

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.

修复方式

sudo apt update && sudo apt dist-upgrade

漏洞判定

执行命令apt policy PackageName获取软件包版本号，版本小于修复版本，则受此漏洞影响，版本大于等于修复版本，则此漏洞已修复

补丁

参考

https://security-tracker.debian.org/tracker/CVE-2019-9517
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9517
https://nvd.nist.gov/vuln/detail/CVE-2019-9517