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FreeBSD : Ghostscript -- Security bypass vulnerability (5ed7102e-6454-11e9-9a3a-001cc0382b2f)

medium Nessus Plugin ID 124209

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Cedric Buissart (Red Hat) reports :

It was found that the superexec operator was available in the internal dictionary in ghostscript before 9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access to the file system outside of the constrains imposed by -dSAFER.

It was found that the forceput operator could be extracted from the DefineResource method in ghostscript before 9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access to the file system outside of the constrains imposed by
-dSAFER.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?f7d6bcf4

Plugin Details

Severity: Medium

ID: 124209

File Name: freebsd_pkg_5ed7102e645411e99a3a001cc0382b2f.nasl

Version: 1.3

Type: local

Published: 4/22/2019

Updated: 1/23/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:ghostscript9-agpl-base, p-cpe:/a:freebsd:freebsd:ghostscript9-agpl-x11, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 4/21/2019

Vulnerability Publication Date: 3/21/2019

Reference Information

CVE: CVE-2019-3835, CVE-2019-3838