1.修复的CVE

   CVE-2021-45949

    Artifex Software Ghostscript是美国Artifex Software公司的一款开源的PostScript（一种用于电子产业和桌面出版领域的页面描述语言和编程语言）解析器。该产品可显示Postscript文件以及在非Postscript打印机上打印Postscript文件。GhostPDL 9.50到9.54.0存在安全漏洞，该漏洞源于GhostPDL 9.50到9.54.0在采样数据完成时(从采样数据continue和interp调用)有一个基于堆的缓冲区溢出。

    CVE-2021-45944

    Artifex Software Ghostscript是美国Artifex Software公司的一款开源的PostScript（一种用于电子产业和桌面出版领域的页面描述语言和编程语言）解析器。该产品可显示Postscript文件以及在非Postscript打印机上打印Postscript文件。Artifex Software Ghostscript GhostPDL 9.50到9.53.3存在安全漏洞，该漏洞源于在抽样数据sample中有一个after-free(从抽样数据continue和interp调用)。

2.影响的操作系统

    银河麒麟桌面操作系统V10 SP1

3.修复版本

    软件包：ghostscript

    9.50~dfsg-5kylin4.5(V10 SP1)

4.受影响的软件包

    ·银河麒麟桌面操作系统V10 SP1

    ghostscript

    ghostscript-dbg

    ghostscript-doc

    ghostscript-x

    libgs-dev

    libgs9

    libgs9-common

5.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。

    4.0.2桌面版本:

    http://archive.cyjm16888.com/kylin/KYLIN-ALL 4.0.2-desktop main restricted universe multiverse

    4.0.2-sp1桌面版本:

    http://archive.cyjm16888.com/kylin/KYLIN-ALL 4.0.2sp1-desktop main restricted universe multiverse

    4.0.2-sp2桌面版本:

    http://archive.cyjm16888.com/kylin/KYLIN-ALL 4.0.2sp2-desktop main restricted universe multiverse

    4.0.2-sp3桌面版本:

    http://archive.cyjm16888.com/kylin/KYLIN-ALL 4.0.2sp3-desktop main restricted universe multiverse

    4.0.2-sp4桌面版本:

    http://archive.cyjm16888.com/kylin/KYLIN-ALL 4.0.2sp4-desktop main restricted universe multiverse

    10.0版本:

    http://archive.cyjm16888.com/kylin/KYLIN-ALL 10.0 main restricted universe multiverse

    10SP1版本:

    http://archive.cyjm16888.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

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组件包列表 升级相关的组件包。

    $dpkg -i Packagelists

6.软件包下载地址

银河麒麟操作系统桌面版V10 SP1

X86_64软件包下载地址

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-dbg_9.50~dfsg-5kylin4.5_amd64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-doc_9.50~dfsg-5kylin4.5_all.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-x_9.50~dfsg-5kylin4.5_amd64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript_9.50~dfsg-5kylin4.5_amd64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs-dev_9.50~dfsg-5kylin4.5_amd64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9-common_9.50~dfsg-5kylin4.5_all.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9_9.50~dfsg-5kylin4.5_amd64.deb

arm64软件包下载地址

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-dbg_9.50~dfsg-5kylin4.5_arm64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-doc_9.50~dfsg-5kylin4.5_all.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-x_9.50~dfsg-5kylin4.5_arm64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript_9.50~dfsg-5kylin4.5_arm64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs-dev_9.50~dfsg-5kylin4.5_arm64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9-common_9.50~dfsg-5kylin4.5_all.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9_9.50~dfsg-5kylin4.5_arm64.deb