1.修复的CVE ·CVE-2018-20217 描述：在1.17之前的MIT Kerberos 5（aka krb5）的KDC中发现了一个可访问的断言问题。如果攻击者可以使用较旧的加密类型（single DES、triple DES或RC4）获取krbtgt票证，则攻击者可以通过发出S4U2Self请求使KDC崩溃。 2.受影响的软件包 ·中标麒麟高级服务器操作系统 V7 aarch64架构: krb5-devel、krb5-libs、krb5-pkinit、krb5-server、krb5-server-ldap、krb5-workstation、libkadm5 x86_64架构: krb5-devel、krb5-libs、krb5-pkinit、krb5-server、krb5-server-ldap、krb5-workstation、libkadm5 3.软件包修复版本 ·中标麒麟高级服务器操作系统 V7 krb5-devel-1.15.1-46.el7 krb5-libs-1.15.1-46.el7 krb5-pkinit-1.15.1-46.el7 krb5-server-1.15.1-46.el7 krb5-server-ldap-1.15.1-46.el7 krb5-workstation-1.15.1-46.el7 libkadm5-1.15.1-46.el7 4.修复方法 方法一：配置源进行升级安装 1.打开软件包源配置文件，根据仓库地址进行修改。 仓库源地址： 中标麒麟高级服务器操作系统 V7 aarch64:https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/aarch64/ x86_64:https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/ 2.配置完成后执行更新命令进行升级，命令如下： yum update Packagename 方法二：下载安装包进行升级安装 通过软件包地址下载软件包，使用软件包升级命令根据受影响的软件包 列表进行升级安装,命令如下： yum install Packagename 3.升级完成后是否需要重启服务或操作系统： ·CVE-2018-20217：无需重启操作系统与服务即可使漏洞修复生效。 5.软件包下载地址 ·中标麒麟高级服务器操作系统 V7 krb5（aarch64）软件包下载地址: https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/aarch64/Packages/krb5-devel-1.15.1-46.el7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/aarch64/Packages/krb5-libs-1.15.1-46.el7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/aarch64/Packages/krb5-pkinit-1.15.1-46.el7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/aarch64/Packages/krb5-server-1.15.1-46.el7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/aarch64/Packages/krb5-server-ldap-1.15.1-46.el7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/aarch64/Packages/krb5-workstation-1.15.1-46.el7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/aarch64/Packages/libkadm5-1.15.1-46.el7.aarch64.rpm krb5（x86_64）软件包下载地址: https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-devel-1.15.1-46.el7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-devel-1.15.1-46.el7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-libs-1.15.1-46.el7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-libs-1.15.1-46.el7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-pkinit-1.15.1-46.el7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-server-1.15.1-46.el7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-server-1.15.1-46.el7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-server-ldap-1.15.1-46.el7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-server-ldap-1.15.1-46.el7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/krb5-workstation-1.15.1-46.el7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/libkadm5-1.15.1-46.el7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update8/os/adv/lic/base/x86_64/Packages/libkadm5-1.15.1-46.el7.x86_64.rpm 注：其他相关依赖包请到相同目录下载 6.修复验证 使用软件包查询命令，查看相关软件包版本是否与修复版本一致，如果版本一致，则说明修复成功。 sudo rpm -qa | grep Packagename