Debian DSA-4294-1 : ghostscript - security update - Nessus

High Plugin ID: 117504

This page contains detailed information about the Debian DSA-4294-1 : ghostscript - security update Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 117504
Name: Debian DSA-4294-1 : ghostscript - security update
Filename: debian_DSA-4294.nasl
Vulnerability Published: N/A
This Plugin Published: 2018-09-17
Last Modification Time: 2019-04-05
Plugin Version: 1.5
Plugin Type: local
Plugin Family: Debian Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/Debian/dpkg-l, Host/Debian/release, Host/local_checks_enabled

Vulnerability Information

Severity: High
Vulnerability Published: N/A
Patch Published: 2018-09-16
CVE [?]: CVE-2018-16509, CVE-2018-16802
CPE [?]: cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:ghostscript

Synopsis

The remote Debian host is missing a security-related update.

Description

Tavis Ormandy discovered multiple vulnerabilites in Ghostscript, an interpreter for the PostScript language, which could result in the execution of arbitrary code if a malformed Postscript file is processed (despite the dSAFER sandbox being enabled).

Solution

Upgrade the ghostscript packages.

For the stable distribution (stretch), these problems have been fixed in version 9.20~dfsg-3.2+deb9u5.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Debian DSA-4294-1 : ghostscript - security update vulnerability:

Metasploit: exploit/multi/fileformat/ghostscript_failed_restore
[Ghostscript Failed Restore Command Execution]
Exploit-DB: exploits/linux/local/45369.rb
[EDB-45369: Ghostscript - Failed Restore Command Execution (Metasploit)]
GitHub: https://github.com/0xsyr0/OSCP
[CVE-2018-16509]
GitHub: https://github.com/AssassinUKG/CVE_2018_16509
[CVE-2018-16509: exploit..]
GitHub: https://github.com/NCSU-DANCE-Research-Group/CDL
[CVE-2018-16509]
GitHub: https://github.com/SexyBeast233/SecBooks
[CVE-2018-16509]
GitHub: https://github.com/barrracud4/image-upload-exploits
[CVE-2018-16509]
GitHub: https://github.com/rhpco/CVE-2018-16509
[CVE-2018-16509: CVE-2018-16509 Docker Playground - Ghostscript command execution]
GitHub: https://medium.com/@NumbShiva/imagemagic-rce-f364a9f50a14
[CVE-2018-16509]
GitHub: https://github.com/cved-sources/cve-2018-16509
[CVE-2018-16509: Cve-2018-16509]
GitHub: https://github.com/farisv/PIL-RCE-Ghostscript-CVE-2018-16509
[CVE-2018-16509: PoC + Docker Environment for Python PIL/Pillow Remote Shell Command Execution via ...]
GitHub: https://github.com/knqyf263/CVE-2018-16509
[CVE-2018-16509: CVE-2018-16509 (Ghostscript contains multiple -dSAFER sandbox bypass vulnerabilities) ...]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:M/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C

CVSS Base Score:	9.3 (High)
Impact Subscore:	10.0
Exploitability Subscore:	8.6
CVSS Temporal Score:	7.7 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.7 (High)

CVSS V3 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CVSS Base Score:	7.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	1.8
CVSS Temporal Score:	7.2 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.2 (High)

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Plugin Source

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4294. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(117504);
  script_version("1.5");
  script_cvs_date("Date: 2019/04/05 23:25:05");

  script_cve_id("CVE-2018-16509", "CVE-2018-16802");
  script_xref(name:"DSA", value:"4294");

  script_name(english:"Debian DSA-4294-1 : ghostscript - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Tavis Ormandy discovered multiple vulnerabilites in Ghostscript, an
interpreter for the PostScript language, which could result in the
execution of arbitrary code if a malformed Postscript file is
processed (despite the dSAFER sandbox being enabled)."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/ghostscript"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/ghostscript"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2018/dsa-4294"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the ghostscript packages.

For the stable distribution (stretch), these problems have been fixed
in version 9.20~dfsg-3.2+deb9u5."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Ghostscript Failed Restore Command Execution');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ghostscript");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"9.0", prefix:"ghostscript", reference:"9.20~dfsg-3.2+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"ghostscript-dbg", reference:"9.20~dfsg-3.2+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"ghostscript-doc", reference:"9.20~dfsg-3.2+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"ghostscript-x", reference:"9.20~dfsg-3.2+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"libgs-dev", reference:"9.20~dfsg-3.2+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"libgs9", reference:"9.20~dfsg-3.2+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"libgs9-common", reference:"9.20~dfsg-3.2+deb9u5")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/debian_DSA-4294.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\debian_DSA-4294.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/debian_DSA-4294.nasl

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How to Run

Here is how to run the Debian DSA-4294-1 : ghostscript - security update as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Debian Local Security Checks plugin family.
On the right side table select Debian DSA-4294-1 : ghostscript - security update plugin ID 117504.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl debian_DSA-4294.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a debian_DSA-4294.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - debian_DSA-4294.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state debian_DSA-4294.nasl -t <IP/HOST>

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References

DSA | Debian Security Advisory:

4294

See also:

Similar and related Nessus plugins:

117487 - Debian DLA-1504-1 : ghostscript security update
117495 - Slackware 14.2 / current : ghostscript (SSA:2018-256-01)
117595 - Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Ghostscript vulnerabilities (USN-3768-1)
117596 - Artifex Ghostscript < 9.25 PostScript Code Execution Vulnerability
117901 - SUSE SLED12 / SLES12 Security Update : ghostscript (SUSE-SU-2018:2975-1)
117979 - openSUSE Security Update : ghostscript (openSUSE-2018-1122)
117980 - openSUSE Security Update : ghostscript (openSUSE-2018-1123)
118043 - Amazon Linux 2 : ghostscript (ALAS-2018-1088)
118118 - CentOS 7 : ghostscript (CESA-2018:2918)
118125 - Oracle Linux 7 : ghostscript (ELSA-2018-2918)
118128 - RHEL 7 : ghostscript (RHSA-2018:2918)
118166 - Scientific Linux Security Update : ghostscript on SL7.x x86_64 (20181016)
118298 - SUSE SLES12 Security Update : ghostscript (SUSE-SU-2018:2975-2)
118350 - SUSE SLES11 Security Update : ghostscript-library (SUSE-SU-2018:3330-1)
119087 - Virtuozzo 7 : ghostscript / ghostscript-cups / ghostscript-devel / etc (VZLSA-2018-2918)
119132 - GLSA-201811-12 : GPL Ghostscript: Multiple vulnerabilities
119328 - Oracle Linux 6 : ghostscript (ELSA-2018-3760)
119330 - RHEL 6 : ghostscript (RHSA-2018:3760)
119445 - Scientific Linux Security Update : ghostscript on SL6.x i386/x86_64 (20181204)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file debian_DSA-4294.nasl version 1.5. For more plugins, visit the Nessus Plugin Library.

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Debian DSA-4294-1 : ghostscript - security update - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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