1.修復(fù)的CVE ·CVE-2021-3472 描述：X.Org X Server是X.Org（X.org）基金會的一款X Window系統(tǒng)顯示服務(wù)器。X.Org Server 存在數(shù)字錯誤漏洞，該漏洞允許本地用戶升級系統(tǒng)上的特權(quán)。這是由于XChangeFeedbackControl()函數(shù)內(nèi)的整數(shù)下溢。 2.受影響的軟件包 ·中標(biāo)麒麟高級服務(wù)器操作系統(tǒng) V7 aarch64架構(gòu): xorg-x11-server-Xdmx、xorg-x11-server-Xephyr、xorg-x11-server-Xnest、xorg-x11-server-Xorg、xorg-x11-server-Xvfb、xorg-x11-server-Xwayland、xorg-x11-server-common、xorg-x11-server-devel、xorg-x11-server-source x86_64架構(gòu): xorg-x11-server-Xdmx、xorg-x11-server-Xephyr、xorg-x11-server-Xnest、xorg-x11-server-Xorg、xorg-x11-server-Xvfb、xorg-x11-server-Xwayland、xorg-x11-server-common、xorg-x11-server-devel、xorg-x11-server-source 3.軟件包修復(fù)版本 ·中標(biāo)麒麟高級服務(wù)器操作系統(tǒng) V7 xorg-x11-server-Xdmx-1.20.4-16.el7_9 xorg-x11-server-Xephyr-1.20.4-16.el7_9 xorg-x11-server-Xnest-1.20.4-16.el7_9 xorg-x11-server-Xorg-1.20.4-16.el7_9 xorg-x11-server-Xvfb-1.20.4-16.el7_9 xorg-x11-server-Xwayland-1.20.4-16.el7_9 xorg-x11-server-common-1.20.4-16.el7_9 xorg-x11-server-devel-1.20.4-16.el7_9 xorg-x11-server-source-1.20.4-16.el7_9 4.修復(fù)方法 方法一：配置源進行升級安裝 370.打開軟件包源配置文件，根據(jù)倉庫地址進行修改。 倉庫源地址： 中標(biāo)麒麟高級服務(wù)器操作系統(tǒng) 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/ 371.配置完成后執(zhí)行更新命令進行升級，命令如下： yum update Packagename 方法二：下載安裝包進行升級安裝 通過軟件包地址下載軟件包，使用軟件包升級命令根據(jù)受影響的軟件包 列表進行升級安裝,命令如下： yum install Packagename 372.升級完成后是否需要重啟服務(wù)或操作系統(tǒng)： ·CVE-2021-3472：需要重啟 xorg-x11-server 以使漏洞修復(fù)生效。 5.軟件包下載地址 ·中標(biāo)麒麟高級服務(wù)器操作系統(tǒng) V7 xorg-x11-server（aarch64）軟件包下載地址: https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xdmx-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xephyr-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xnest-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xorg-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xvfb-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xwayland-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-common-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-devel-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-source-1.20.4-16.el7_9.noarch.rpm xorg-x11-server（x86_64）軟件包下載地址: https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xdmx-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xephyr-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xnest-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xorg-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xvfb-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xwayland-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-common-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-devel-1.20.4-16.el7_9.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-devel-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-source-1.20.4-16.el7_9.noarch.rpm 注：其他相關(guān)依賴包請到相同目錄下載 6.修復(fù)驗證 使用軟件包查詢命令，查看相關(guān)軟件包版本是否與修復(fù)版本一致，如果版本一致，則說明修復(fù)成功。 sudo rpm -qa | grep Packagename