1. 修复的CVE CVE-2021-25220 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. 受影响的操作系统及软件包 ·银河麒麟桌面操作系统V10 x86_64 架构： bind9-host、bind9、bind9utils、dnsutils、host、libbind9-140、libdns-export162、libdns162、libirs-export141、libirs141、libisc-export160、libisc160、libisccc-export140、libisccc140、libisccfg-export140、libisccfg140、liblwres141、lwresd arm64 架构： bind9-host、bind9、bind9utils、dnsutils、host、libbind9-140、libdns-export162、libdns162、libirs-export141、libirs141、libisc-export160、libisc160、libisccc-export140、libisccc140、libisccfg-export140、libisccfg140、liblwres141、lwresd mips64el 架构： bind9-host、bind9、bind9utils、dnsutils、host、libbind9-140、libdns-export162、libdns162、libirs-export141、libirs141、libisc-export160、libisc160、libisccc-export140、libisccc140、libisccfg-export140、libisccfg140、liblwres141、lwresd 3. 软件包修复版本 ·银河麒麟桌面操作系统V10 1:9.10.3.dfsg.P4-8kord1.19+esm2 4. 修复方法 方法一：升级安装 执行更新命令进行升级 $sudo apt update $sudo apt install bind9 方法二：下载软件包进行升级安装 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升级相关的组件包。 $sudo dpkg -i /Path1/Package1 /Path2/Package2 /Path3/Package3…… 注：Path 指软件包下载到本地的路径，Package指下载的软件包名称，多个软件包则以空格分开。 5. 软件包下载地址 银河麒麟桌面操作系统V10 x86_64软件包下载地址 http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/b/bind9/bind9-host_9.10.3.dfsg.P4-8kord1.19%2Besm2_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/b/bind9/bind9_9.10.3.dfsg.P4-8kord1.19%2Besm2_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/b/bind9/bind9utils_9.10.3.dfsg.P4-8kord1.19%2Besm2_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/b/bind9/dnsutils_9.10.3.dfsg.P4-8kord1.19%2Besm2_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/b/bind9/host_9.10.3.dfsg.P4-8kord1.19%2Besm2_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/b/bind9/libbind9-140_9.10.3.dfsg.P4-8kord1.19%2Besm2_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/b/bind9/libdns-export162_9.10.3.dfsg.P4-8kord1.19%2Besm2_amd64.deb 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