CVE-2018-16509

Publication date 5 September 2018

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

Description

An issue was discovered in Artifex Ghostscript before 9.24. Incorrect "restoration of privilege" checking during handling of /invalidaccess exceptions could be used by attackers able to supply crafted PostScript to execute code using the "pipe" instruction.

Status

Package Ubuntu Release Status
ghostscript 18.04 LTS bionic
Fixed 9.22~dfsg+1-0ubuntu1.2
16.04 LTS xenial
Fixed 9.18~dfsg~0-0ubuntu2.9
14.04 LTS trusty
Fixed 9.10~dfsg-0ubuntu10.13

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
ghostscript

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3768-1
    • Ghostscript vulnerabilities
    • 19 September 2018

Other references