1. 修复的CVE信息
CVE-2021-36217
描述：Avahi 0.8 允许通过 D-Bus 接口或“ping .local”命令对 avahi-daemon 进行本地拒绝服务（空指针取消引用和守护程序崩溃）。
2. 影响的操作系统及修复版本
银河麒麟高级服务器操作系统 V10 SP2
avahi-0.8-5.ky10
avahi-compat-howl-0.8-5.ky10
avahi-compat-howl-devel-0.8-5.ky10
avahi-compat-libdns_sd-0.8-5.ky10
avahi-compat-libdns_sd-devel-0.8-5.ky10
avahi-debugsource-0.8-5.ky10
avahi-devel-0.8-5.ky10
avahi-dnsconfd-0.8-5.ky10
avahi-glib-0.8-5.ky10
avahi-gobject-0.8-5.ky10
avahi-help-0.8-5.ky10
avahi-libs-0.8-5.ky10
avahi-tools-0.8-5.ky10
avahi-ui-0.8-5.ky10
avahi-ui-devel-0.8-5.ky10
avahi-ui-gtk3-0.8-5.ky10
3. 受影响的软件包
银河麒麟高级服务器操作系统 V10 SP2
aarch64:avahi、avahi-compat-howl、avahi-compat-howl-devel、avahi-compat-libdns_sd、avahi-compat-libdns_sd-devel、avahi-debugsource、avahi-devel、avahi-dnsconfd、avahi-glib、avahi-gobject、avahi-help、avahi-libs、avahi-tools、avahi-ui、avahi-ui-devel、avahi-ui-gtk3
x86_64:avahi、avahi-compat-howl、avahi-compat-howl-devel、avahi-compat-libdns_sd、avahi-compat-libdns_sd-devel、avahi-debugsource、avahi-devel、avahi-dnsconfd、avahi-glib、avahi-gobject、avahi-help、avahi-libs、avahi-tools、avahi-ui、avahi-ui-devel、avahi-ui-gtk3
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：银河麒麟高级服务器操作系统 V10 SP2
aarch64:http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/
x86_64:http://update.cs2c.com.cn:8080/NS/V10/V10SP2/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
5. 软件包下载地址
银河麒麟高级服务器操作系统 V10 SP2
avahi aarch64软件包下载地址:
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-compat-howl-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-compat-howl-devel-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-compat-libdns_sd-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-compat-libdns_sd-devel-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-debugsource-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-devel-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-dnsconfd-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-glib-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-gobject-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-help-0.8-5.ky10.noarch.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-libs-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-tools-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-ui-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-ui-devel-0.8-5.ky10.aarch64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/Packages/avahi-ui-gtk3-0.8-5.ky10.aarch64.rpm
avahi x86_64软件包下载地址:
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-compat-howl-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-compat-howl-devel-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-compat-libdns_sd-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-compat-libdns_sd-devel-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-debugsource-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-devel-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-dnsconfd-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-glib-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-gobject-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-help-0.8-5.ky10.noarch.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-libs-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-tools-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-ui-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-ui-devel-0.8-5.ky10.x86_64.rpm
http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/Packages/avahi-ui-gtk3-0.8-5.ky10.x86_64.rpm
注：其他相关依赖包请到相同目录下载
