nginx禁用3DES和DES弱加密算法，保证SSL证书安全【转】
收到漏扫报告↓↓↓↓↓↓↓
漏洞名称
SSL/TLS协议信息泄露漏洞(CVE-2016-2183)【原理扫描】
详细描述
TLS是安全传输层协议，用于在两个通信应用程序之间提供保密性和数据完整性。
TLS, SSH, IPSec协商及其他产品中使用的DES及Triple DES密码或者3DES及Triple 3DES存在大约四十亿块的生日界，这可使远程攻击者通过Sweet32攻击，获取纯文本数据。
<*来源：Karthik Bhargavan
Gaetan Leurent
链接：https://www.openssl.org/news/secadv/20160922.txt
*>
解决办法
建议：避免使用DES和3DES算法
1、OpenSSL Security Advisory [22 Sep 2016] 链接：https://www.openssl.org/news/secadv/20160922.txt 请在下列网页下载最新版本： https://www.openssl.org/source/ 2、对于nginx、apache、lighttpd等服务器禁止使用DES加密算法 主要是修改conf文件 3、Windows系统可以参考如下链接： https://social.technet.microsoft.com/Forums/en-US/31b3ba6f-d0e6-417a-b6f1-d0103f054f8d/ssl-medium-strength-cipher-suites-supported-sweet32cve20162183forum=ws2016 https://docs.microsoft.com/zh-cn/troubleshoot/windows-server/windows-security/restrict-cryptographic-algorithms-protocols-schannel
威胁分值
7.5
危险插件
否
发现日期
2016-08-31
CVE编号
CVE-2016-2183
BUGTRAQ
92630
NSFOCUS
34880
CNNVD编号
CNNVD-201608-448
CNCVE编号
CNCVE-20162183
CVSS评分
5.0
CNVD编号
CNVD-2016-06765
操作如下：
本机扫描 yum install -y nmap nmap -sV -p 443 --script ssl-enum-ciphers 10.2.10.2 [root@zhtzdb-10 ~]# nmap -sV -p 443 --script ssl-enum-ciphers 10.2.10.2 Starting Nmap 6.40 ( http://nmap.org ) at 2022-07-05 10:36 CST Nmap scan report for 10.2.10.2 Host is up (0.00011s latency). PORT STATE SERVICE VERSION 443/tcp open http nginx | ssl-enum-ciphers: | SSLv3: No supported ciphers found | TLSv1.0: | ciphers: | TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_128_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_256_CBC_SHA - strong | compressors: | NULL | TLSv1.1: | ciphers: | TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_128_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_256_CBC_SHA - strong | compressors: | NULL | TLSv1.2: | ciphers: | TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 - strong | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 - strong | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 - strong | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 - strong | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_AES_128_CBC_SHA256 - strong | TLS_RSA_WITH_AES_128_GCM_SHA256 - strong | TLS_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_AES_256_CBC_SHA256 - strong | TLS_RSA_WITH_AES_256_GCM_SHA384 - strong | TLS_RSA_WITH_CAMELLIA_128_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_256_CBC_SHA - strong | compressors: | NULL |_ least strength: strong Service detection performed. Please report any incorrect results at http://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 6.34 seconds 编辑nginx.conf文件，修改ssl_ciphers后面的参数，如下↓ server { listen 443 ssl; server_name www.cookie.com; ssl_certificate cert/2022_www.cookie.com.pem; ssl_certificate_key cert/2022_www.cookie.com.key; ssl_session_timeout 5m; #ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4; ssl_ciphers HIGH:!ADH:!MD5; ssl_protocols TLSv1 TLSv1.1 TLSv1.2; ssl_prefer_server_ciphers on; 保存退出，重启nginx服务。 重新执行nmap命令 [root@zhtzdb-10 ~]# nmap -sV -p 443 --script ssl-enum-ciphers 10.2.10.2 Starting Nmap 6.40 ( http://nmap.org ) at 2022-07-05 10:48 CST Nmap scan report for 10.2.10.2 Host is up (0.00010s latency). PORT STATE SERVICE VERSION 443/tcp open http nginx | ssl-enum-ciphers: | SSLv3: No supported ciphers found | TLSv1.0: | ciphers: | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA - strong | TLS_ECDH_anon_WITH_AES_128_CBC_SHA - broken | TLS_ECDH_anon_WITH_AES_256_CBC_SHA - broken | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_128_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_256_CBC_SHA - strong | compressors: | NULL | TLSv1.1: | ciphers: | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA - strong | TLS_ECDH_anon_WITH_AES_128_CBC_SHA - broken | TLS_ECDH_anon_WITH_AES_256_CBC_SHA - broken | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_128_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_256_CBC_SHA - strong | compressors: | NULL | TLSv1.2: | ciphers: | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 - strong | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 - strong | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 - strong | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 - strong | TLS_ECDH_anon_WITH_AES_128_CBC_SHA - broken | TLS_ECDH_anon_WITH_AES_256_CBC_SHA - broken | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_AES_128_CBC_SHA256 - strong | TLS_RSA_WITH_AES_128_GCM_SHA256 - strong | TLS_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_AES_256_CBC_SHA256 - strong | TLS_RSA_WITH_AES_256_GCM_SHA384 - strong | TLS_RSA_WITH_CAMELLIA_128_CBC_SHA - strong | TLS_RSA_WITH_CAMELLIA_256_CBC_SHA - strong | compressors: | NULL |_ least strength: broken Service detection performed. Please report any incorrect results at http://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 6.35 seconds
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原文链接：https://blog.csdn.net/m0_67391518/article/details/126113735
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(40条消息) nginx禁用3DES和DES弱加密算法，保证SSL证书安全_普通网友的博客-CSDN博客_nginx 禁止使用des加密算法
https://blog.csdn.net/m0_67391518/article/details/126113735
