CVE:CVE-2018-16509
CNNVD:CNNVD-201809-163
Artifex 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，它可显示Postscript文件以及在非Postscript打印机上打印Postscript文件。
Artifex Ghostscript 9.24之前版本中存在安全漏洞，该漏洞源于在处理/invalidaccess异常时，程序没有正确的检测‘restoration of privilege（权限恢复）’。攻击者可通过提交特制的PostScript利用该漏洞执行代码。
solution:Upgrade debian debian_linux to a higher version than 8.0,9.0,and avoid the version 8.0,9.0; Upgrade artifex ghostscript to a higher version than 9.24,and avoid the version (,9.24); Upgrade canonical ubuntu_linux to a higher version than 14.04,16.04,18.04,and avoid the version 14.04,16.04,18.04; Upgrade redhat enterprise_linux_desktop to a higher version than 6.0,7.0,and avoid the version 6.0,7.0; Upgrade redhat enterprise_linux_server to a higher version than 6.0,7.0,and avoid the version 6.0,7.0; Upgrade redhat enterprise_linux_server_eus to a higher version than 7.5,and avoid the version 7.5; Upgrade redhat enterprise_linux_workstation to a higher version than 6.0,7.0,and avoid the version 6.0,7.0; Upgrade artifex gpl_ghostscript to a higher version than 9.26,and avoid the version (,9.26)