N/A - USN-4092-1

Executive Summary

Summary
Title	Ghostscript vulnerability

Informations
Name	USN-4092-1	First vendor Publication	2019-08-12
Vendor	Ubuntu	Last vendor Modification	2019-08-12
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4092-1
CVE-2019-10216

Package Information:
https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu7.2
https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.18.04.10
https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.16.04.10