安全公告/【CVE-2021-3733】

基本信息

漏洞描述

There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.

漏洞判定

执行命令yum info 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

修复方式

yum update PackageName

参考

https://www.openeuler.org/zh/security/cve/detail/?cveid=CVE-2021-3733&packageName=python3 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3733 https://nvd.nist.gov/vuln/detail/CVE-2021-3733