1.修复的CVE ·CVE-2018-5743 描述：在bind实现可调的方式中发现了一个缺陷，该缺陷限制了同时进行的TCP客户端连接。远程攻击者可以利用此漏洞耗尽named可用的文件描述符池，从而可能影响网络连接和日志文件或区域日志文件等文件的管理。在命名进程不受操作系统强制的每个进程限制的情况下，这还可能导致耗尽该系统上所有可用的可用文件描述符。 ·CVE-2020-8616 描述：在BIND中发现了一个缺陷，该缺陷没有充分限制在处理引用响应时可以执行的获取数。此漏洞允许攻击者造成拒绝服务攻击。攻击者还可以利用此行为将递归服务器用作高放大因子的反射攻击中的反射器。 ·CVE-2020-8617 描述：在BIND中发现断言失败，它检查包含TSIG资源记录的消息的有效性。此漏洞允许知道或成功猜测服务器使用的TSIG密钥名称的攻击者使用构建的消息，从而可能导致绑定服务器达到不一致的状态或导致拒绝服务。大多数BIND服务器都有一个内部生成的TSIG会话密钥，该密钥的名称很容易猜到，除非特别禁用，否则该密钥会暴露漏洞。 ·CVE-2020-8625 描述：ISC BIND是美国ISC公司的一套实现了DNS协议的开源软件。BIND 存在安全漏洞，该漏洞源于通过显式地为tkey-gssapi-keytab或tkey-gssapi-credentialconfiguration选项设置有效值，服务器可能会变得脆弱。 ·CVE-2021-25214 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，该漏洞导致接收已命名服务器无意中从区域数据库中删除有问题的区域的SOA记录。 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_9.7或以上版本 bind-chroot-9.11.4-26.P2.el7_9.7或以上版本 bind-devel-9.11.4-26.P2.el7_9.7或以上版本 bind-export-devel-9.11.4-26.P2.el7_9.7或以上版本 bind-export-libs-9.11.4-26.P2.el7_9.7或以上版本 bind-libs-9.11.4-26.P2.el7_9.7或以上版本 bind-libs-lite-9.11.4-26.P2.el7_9.7或以上版本 bind-license-9.11.4-26.P2.el7_9.7或以上版本 bind-lite-devel-9.11.4-26.P2.el7_9.7或以上版本 bind-pkcs11-9.11.4-26.P2.el7_9.7或以上版本 bind-pkcs11-devel-9.11.4-26.P2.el7_9.7或以上版本 bind-pkcs11-libs-9.11.4-26.P2.el7_9.7或以上版本 bind-pkcs11-utils-9.11.4-26.P2.el7_9.7或以上版本 bind-sdb-9.11.4-26.P2.el7_9.7或以上版本 bind-sdb-chroot-9.11.4-26.P2.el7_9.7或以上版本 bind-utils-9.11.4-26.P2.el7_9.7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_9.7或以上版本 bind-chroot-9.11.4-26.P2.el7_9.7或以上版本 bind-devel-9.11.4-26.P2.el7_9.7或以上版本 bind-export-devel-9.11.4-26.P2.el7_9.7或以上版本 bind-export-libs-9.11.4-26.P2.el7_9.7或以上版本 bind-libs-9.11.4-26.P2.el7_9.7或以上版本 bind-libs-lite-9.11.4-26.P2.el7_9.7或以上版本 bind-license-9.11.4-26.P2.el7_9.7或以上版本 bind-lite-devel-9.11.4-26.P2.el7_9.7或以上版本 bind-pkcs11-9.11.4-26.P2.el7_9.7或以上版本 bind-pkcs11-devel-9.11.4-26.P2.el7_9.7或以上版本 bind-pkcs11-libs-9.11.4-26.P2.el7_9.7或以上版本 bind-pkcs11-utils-9.11.4-26.P2.el7_9.7或以上版本 bind-sdb-9.11.4-26.P2.el7_9.7或以上版本 bind-sdb-chroot-9.11.4-26.P2.el7_9.7或以上版本 bind-utils-9.11.4-26.P2.el7_9.7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-2018-5743:无需重启操作系统与服务即可使漏洞修复生效。 CVE-2020-8616:无需重启操作系统与服务即可使漏洞修复生效。 CVE-2020-8617:无需重启操作系统与服务即可使漏洞修复生效。 CVE-2020-8625:无需重启操作系统与服务即可使漏洞修复生效。 CVE-2021-25214: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_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-chroot-9.11.4-26.P2.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-devel-9.11.4-26.P2.el7_9.7.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_9.7.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_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-libs-9.11.4-26.P2.el7_9.7.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_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-license-9.11.4-26.P2.el7_9.7.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_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-pkcs11-9.11.4-26.P2.el7_9.7.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_9.7.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_9.7.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_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-sdb-9.11.4-26.P2.el7_9.7.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_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/bind-utils-9.11.4-26.P2.el7_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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_9.7.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