Several security issues were fixed in poppler.
It was discovered that Poppler incorrectly handled certain files. If a user or automated system were tricked into opening a crafted PDF file, an attacker could cause a denial of service. (CVE-2017-14518, CVE-2017-14520, CVE-2017-14617, CVE-2017-14929, CVE-2017-14975, CVE-2017-14977)
6 October 2017
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in poppler.
It was discovered that Poppler incorrectly handled certain files. If a user or automated system were tricked into opening a crafted PDF file, an attacker could cause a denial of service. (CVE-2017-14518, CVE-2017-14520, CVE-2017-14617, CVE-2017-14929, CVE-2017-14975, CVE-2017-14977)
It was discovered that Poppler incorrectly handled certain files. If a user or automated system were tricked into opening a crafted PDF file, an attacker could cause a denial of service. This issue only affected Ubuntu 17.04 and 16.04. (CVE-2017-14926, CVE-2017-14928)
Alberto Garcia, Francisco Oca and Suleman Ali discovered that Poppler incorrectly handled certain files. If a user or automated system were tricked into opening a crafted PDF file, an attacker could cause a denial of service. (CVE-2017-9776)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.