CVE-2019-10216

Published: 12 August 2019

In ghostscript before version 9.50, the .buildfont1 procedure did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. An attacker could abuse this flaw by creating a specially crafted PostScript file that could escalate privileges and access files outside of restricted areas.

From the Ubuntu security team

Netanel Fisher discovered that the font handler in Ghostscript did not properly restrict privileged calls when '-dSAFER' restrictions were in effect. If a user or automated system were tricked into processing a specially crafted file, a remote attacker could possibly use this issue to access arbitrary files.

Priority

Medium

CVSS 3 base score: 7.8

Status

Package Release Status
ghostscript
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 18.04 LTS (Bionic Beaver)
Released (9.26~dfsg+0-0ubuntu0.18.04.10)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (9.26~dfsg+0-0ubuntu0.16.04.10)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

Patches:
Upstream: http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=5b85ddd19