CVE:CVE-2017-9776
CNNVD:CNNVD-201706-977
Poppler是一个用于生成PDF的C++类库，该库是从Xpdf（PDF阅读器）继承而来。pdftocairo是其中的一个文件格式转换器。
Poppler 0.56之前的版本中的pdftocairo的JBIG2Stream.cc文件存在安全漏洞。远程攻击者可借助特制的PDF文档利用该漏洞造成拒绝服务（应用程序崩溃）。
solution:Upgrade freedesktop poppler to a higher version than 0.55.0,and avoid the version (,0.55.0]; Upgrade debian debian_linux to a higher version than 8.0,9.0,and avoid the version 8.0,9.0; 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_aus to a higher version than 7.4,7.6,and avoid the version 7.4,7.6; Upgrade redhat enterprise_linux_server_eus to a higher version than 7.4,7.5,7.6,and avoid the version 7.4,7.5,7.6; Upgrade redhat enterprise_linux_server_tus to a higher version than 7.4,7.6,and avoid the version 7.4,7.6; Upgrade redhat enterprise_linux_workstation to a higher version than 6.0,7.0,and avoid the version 6.0,7.0