USN-4092-1: Ghostscript vulnerability
ghostscript vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
Ghostscript could be made to access files if it opened a specially crafted file.
Software Description
- ghostscript - PostScript and PDF interpreter
Details
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.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.04
- ghostscript - 9.26~dfsg+0-0ubuntu7.2
- libgs9 - 9.26~dfsg+0-0ubuntu7.2
- Ubuntu 18.04 LTS
- ghostscript - 9.26~dfsg+0-0ubuntu0.18.04.10
- libgs9 - 9.26~dfsg+0-0ubuntu0.18.04.10
- Ubuntu 16.04 LTS
- ghostscript - 9.26~dfsg+0-0ubuntu0.16.04.10
- libgs9 - 9.26~dfsg+0-0ubuntu0.16.04.10
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.
References
from Ubuntu Security Notices https://ift.tt/2ZRbKsp