受影响系统：
Xpdf Xpdf 3.x
Xpdf Xpdf 2.x
描述：
Xpdf是便携文档格式（PDF）文件的开放源码查看器。
在某些情况下Xpdf的Gfx::getPos()函数中可能会试图引用未经初始化的Gfx::parser指针，诱骗受骗打开了恶意的PDF文档就会导致拒绝服务或执行任意代码。
<*来源：Joel Voss
链接：http://secunia.com/advisories/41596/
https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=595245
https://www.redhat.com/support/errata/RHSA-2010-0754.html
https://www.redhat.com/support/errata/RHSA-2010-0755.html
https://www.redhat.com/support/errata/RHSA-2010-0753.html
https://www.redhat.com/support/errata/RHSA-2010-0752.html
https://www.redhat.com/support/errata/RHSA-2010-0750.html
https://www.redhat.com/support/errata/RHSA-2010-0751.html
https://www.redhat.com/support/errata/RHSA-2010-0749.html
*>
建议：
厂商补丁：
RedHat
——
RedHat已经为此发布了一个安全公告（RHSA-2010:0749-01）以及相应补丁:
RHSA-2010:0749-01：Important: poppler security update
链接：https://www.redhat.com/support/errata/RHSA-2010-0749.html
Xpdf
—-
目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：
http://cgit.freedesktop.org/poppler/poppler/commit/?id=39d140bfc0b8239bdd96d6a55842034ae5c05473
http://cgit.freedesktop.org/poppler/poppler/commit/?id=e853106b58d6b4b0467dbd6436c9bb1cfbd372cf
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