1. 修复的CVE

CVE-2021-21261

Flatpak是一套用于Linux桌面应用计算机环境的应用程序虚拟化系统。Flatpak 存在注入漏洞，该漏洞源于flatpak-portal允许沙箱应用程序在主机系统上执行任意代码(沙箱逃脱)。

2. 受影响的操作系统及软件包

·银河麒麟桌面操作系统V10 SP1

x86_64 架构：

flatpak-tests、flatpak、gir1.2-flatpak-1.0、libflatpak0

arm64 架构：

flatpak-tests、flatpak、gir1.2-flatpak-1.0、libflatpak0

mips64el 架构：

flatpak-tests、flatpak、gir1.2-flatpak-1.0、libflatpak0

3. 软件包修复版本

·银河麒麟桌面操作系统V10 SP1

1.6.5-0kylin0.3

4. 修复方法

方法一：配置源进行升级安装

打开软件包源配置文件，根据仓库地址进行修改。

10.0 SP1:

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL 10.1 main restricted universe multiverse

配置完成后执行更新命令进行升级

$sudo apt update

$sudo apt install flatpak

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 SP1

x86_64软件包下载地址

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/flatpak-tests_1.6.5-0kylin0.3_amd64.deb

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/flatpak_1.6.5-0kylin0.3_amd64.deb

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/gir1.2-flatpak-1.0_1.6.5-0kylin0.3_amd64.deb

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/libflatpak0_1.6.5-0kylin0.3_amd64.deb

arm64软件包下载地址

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/flatpak-tests_1.6.5-0kylin0.3_arm64.deb

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/flatpak_1.6.5-0kylin0.3_arm64.deb

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/gir1.2-flatpak-1.0_1.6.5-0kylin0.3_arm64.deb

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/libflatpak0_1.6.5-0kylin0.3_arm64.deb

mips64el软件包下载地址

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/flatpak-tests_1.6.5-0kylin0.3_mips64el.deb

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/flatpak_1.6.5-0kylin0.3_mips64el.deb

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/gir1.2-flatpak-1.0_1.6.5-0kylin0.3_mips64el.deb

http://archive.fumeibaihuo.com/kylin/KYLIN-ALL/pool/universe/f/flatpak/libflatpak0_1.6.5-0kylin0.3_mips64el.deb

6. 修复验证

使用软件包查询命令，查看相关的软件包版本与修复版本一致则成功修复。

$sudo dpkg -l |grep Package

注：Package为软件包包名。