CVE Vulnerabilities

CVE-2018-16541

Use After Free

Published: Sep 05, 2018 | Modified: Nov 21, 2024
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.3 IMPORTANT
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Ubuntu
MEDIUM

In Artifex Ghostscript before 9.24, attackers able to supply crafted PostScript files could use incorrect free logic in pagedevice replacement to crash the interpreter.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Ghostscript Artifex * 9.24 (excluding)
Red Hat Enterprise Linux 7 RedHat ghostscript-0:9.07-31.el7_6.6 *
Ghostscript Ubuntu bionic *
Ghostscript Ubuntu devel *
Ghostscript Ubuntu esm-infra/bionic *
Ghostscript Ubuntu esm-infra/xenial *
Ghostscript Ubuntu trusty *
Ghostscript Ubuntu upstream *
Ghostscript Ubuntu xenial *

Potential Mitigations

References