1.修复的CVE ·CVE-2021-25220 描述：ISC BIND是美国ISC公司的一套实现了DNS协议的开源软件。ISC BIND 存在安全漏洞，该漏洞源于已经收紧了接受记录到缓存中的规则，以防止如果转发器在配置的范围之外发送记录可能会中毒。 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: bind、bind-chroot、bind-devel、bind-export-devel、bind-export-libs、bind-libs、bind-libs-lite、bind-license、bind-lite-devel、bind-pkcs11、bind-pkcs11-devel、bind-pkcs11-libs、bind-pkcs11-utils、bind-sdb、bind-sdb-chroot、bind-utils ·x86_64架构: bind、bind-chroot、bind-devel、bind-export-devel、bind-export-libs、bind-libs、bind-libs-lite、bind-license、bind-lite-devel、bind-pkcs11、bind-pkcs11-devel、bind-pkcs11-libs、bind-pkcs11-utils、bind-sdb、bind-sdb-chroot、bind-utils ·银河麒麟高级服务器操作系统 V10 ·aarch64架构: bind、bind-chroot、bind-devel、bind-export-devel、bind-export-libs、bind-libs、bind-libs-lite、bind-license、bind-lite-devel、bind-pkcs11、bind-pkcs11-devel、bind-pkcs11-libs、bind-pkcs11-utils、bind-sdb、bind-sdb-chroot、bind-utils ·x86_64架构: bind、bind-chroot、bind-devel、bind-export-devel、bind-export-libs、bind-libs、bind-libs-lite、bind-license、bind-lite-devel、bind-pkcs11、bind-pkcs11-devel、bind-pkcs11-libs、bind-pkcs11-utils、bind-sdb、bind-sdb-chroot、bind-utils 3.软件包修复版本 ·中标麒麟高级服务器操作系统 V7 (aarch64、x86_64) bind-9.11.4-26.P2.el7_9.13或以上版本 bind-chroot-9.11.4-26.P2.el7_9.13或以上版本 bind-devel-9.11.4-26.P2.el7_9.13或以上版本 bind-export-devel-9.11.4-26.P2.el7_9.13或以上版本 bind-export-libs-9.11.4-26.P2.el7_9.13或以上版本 bind-libs-9.11.4-26.P2.el7_9.13或以上版本 bind-libs-lite-9.11.4-26.P2.el7_9.13或以上版本 bind-license-9.11.4-26.P2.el7_9.13或以上版本 bind-lite-devel-9.11.4-26.P2.el7_9.13或以上版本 bind-pkcs11-9.11.4-26.P2.el7_9.13或以上版本 bind-pkcs11-devel-9.11.4-26.P2.el7_9.13或以上版本 bind-pkcs11-libs-9.11.4-26.P2.el7_9.13或以上版本 bind-pkcs11-utils-9.11.4-26.P2.el7_9.13或以上版本 bind-sdb-9.11.4-26.P2.el7_9.13或以上版本 bind-sdb-chroot-9.11.4-26.P2.el7_9.13或以上版本 bind-utils-9.11.4-26.P2.el7_9.13或以上版本 ·银河麒麟高级服务器操作系统 V10 (aarch64、x86_64) bind-9.11.4-26.P2.el7_9.13或以上版本 bind-chroot-9.11.4-26.P2.el7_9.13或以上版本 bind-devel-9.11.4-26.P2.el7_9.13或以上版本 bind-export-devel-9.11.4-26.P2.el7_9.13或以上版本 bind-export-libs-9.11.4-26.P2.el7_9.13或以上版本 bind-libs-9.11.4-26.P2.el7_9.13或以上版本 bind-libs-lite-9.11.4-26.P2.el7_9.13或以上版本 bind-license-9.11.4-26.P2.el7_9.13或以上版本 bind-lite-devel-9.11.4-26.P2.el7_9.13或以上版本 bind-pkcs11-9.11.4-26.P2.el7_9.13或以上版本 bind-pkcs11-devel-9.11.4-26.P2.el7_9.13或以上版本 bind-pkcs11-libs-9.11.4-26.P2.el7_9.13或以上版本 bind-pkcs11-utils-9.11.4-26.P2.el7_9.13或以上版本 bind-sdb-9.11.4-26.P2.el7_9.13或以上版本 bind-sdb-chroot-9.11.4-26.P2.el7_9.13或以上版本 bind-utils-9.11.4-26.P2.el7_9.13或以上版本 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/V7Update9/os/adv/lic/updates/aarch64/ x86_64:https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/ 银河麒麟高级服务器操作系统 V10 aarch64:https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/ x86_64:https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/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-2021-25220: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 bind(aarch64)软件包下载地址: https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-chroot-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-devel-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-export-devel-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-export-libs-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-libs-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-libs-lite-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-license-9.11.4-26.P2.el7_9.13.noarch.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-lite-devel-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-pkcs11-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-pkcs11-devel-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-pkcs11-libs-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-pkcs11-utils-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-sdb-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-sdb-chroot-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-utils-9.11.4-26.P2.el7_9.13.aarch64.rpm bind(x86_64)软件包下载地址: https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-chroot-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-devel-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-export-devel-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-export-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-export-libs-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-export-libs-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-libs-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-libs-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-libs-lite-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-libs-lite-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-license-9.11.4-26.P2.el7_9.13.noarch.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-lite-devel-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-lite-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-devel-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-libs-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-libs-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-utils-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-sdb-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-sdb-chroot-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/bind-utils-9.11.4-26.P2.el7_9.13.x86_64.rpm ·银河麒麟高级服务器操作系统 V10 bind(aarch64)软件包下载地址: https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-chroot-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-devel-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-export-devel-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-export-libs-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-libs-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-libs-lite-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-license-9.11.4-26.P2.el7_9.13.noarch.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-lite-devel-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-pkcs11-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-pkcs11-devel-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-pkcs11-libs-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-pkcs11-utils-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-sdb-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-sdb-chroot-9.11.4-26.P2.el7_9.13.aarch64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/aarch64/Packages/bind-utils-9.11.4-26.P2.el7_9.13.aarch64.rpm bind(x86_64)软件包下载地址: https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-chroot-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-devel-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-export-devel-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-export-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-export-libs-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-export-libs-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-libs-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-libs-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-libs-lite-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-libs-lite-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-license-9.11.4-26.P2.el7_9.13.noarch.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-lite-devel-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-lite-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-devel-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-devel-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-libs-9.11.4-26.P2.el7_9.13.i686.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-libs-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-pkcs11-utils-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-sdb-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-sdb-chroot-9.11.4-26.P2.el7_9.13.x86_64.rpm https://update.cs2c.com.cn/NS/V10/V10-ZJ/os/adv/lic/updates/x86_64/Packages/bind-utils-9.11.4-26.P2.el7_9.13.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