1. 修复的CVE信息
CVE-2021-3781
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。ghostscript interpreter 存在代码注入漏洞，攻击者可以利用该漏洞在系统上执行任意命令。
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-5kylin4.3(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-sp1:http://archive.cyjm16888.com/kylin/KYLIN-ALL 4.0.2sp1-desktop main restricted universe multiverse
4.0.2-sp2:http://archive.cyjm16888.com/kylin/KYLIN-ALL 4.0.2sp2-desktop main restricted universe multiverse
4.0.2-sp3:http://archive.cyjm16888.com/kylin/KYLIN-ALL 4.0.2sp3-desktop main restricted universe multiverse
4.0.2-sp4:http://archive.cyjm16888.com/kylin/KYLIN-ALL 4.0.2sp4-desktop main restricted universe multiverse
10.0:http://archive.cyjm16888.com/kylin/KYLIN-ALL 10.0 main restricted universe multiverse
10.0 SP1: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
银河麒麟桌面操作系统V10 SP1
X86_64软件包下载地址：
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript_9.50~dfsg-5kylin4.3_amd64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-x_9.50~dfsg-5kylin4.3_amd64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs-dev_9.50~dfsg-5kylin4.3_amd64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-dbg_9.50~dfsg-5kylin4.3_amd64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-doc_9.50~dfsg-5kylin4.3_all.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9_9.50~dfsg-5kylin4.3_amd64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9-common_9.50~dfsg-5kylin4.3_all.deb
arm64软件包下载地址：
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript_9.50~dfsg-5kylin4.3_arm64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-x_9.50~dfsg-5kylin4.3_arm64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs-dev_9.50~dfsg-5kylin4.3_arm64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-dbg_9.50~dfsg-5kylin4.3_arm64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-doc_9.50~dfsg-5kylin4.3_all.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9_9.50~dfsg-5kylin4.3_arm64.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9-common_9.50~dfsg-5kylin4.3_all.deb
mips64el软件包下载地址：
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript_9.50~dfsg-5kylin4.3_mips64el.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-x_9.50~dfsg-5kylin4.3_mips64el.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs-dev_9.50~dfsg-5kylin4.3_mips64el.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-dbg_9.50~dfsg-5kylin4.3_mips64el.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/ghostscript-doc_9.50~dfsg-5kylin4.3_all.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9_9.50~dfsg-5kylin4.3_mips64el.deb
http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/ghostscript/libgs9-common_9.50~dfsg-5kylin4.3_all.deb
