Vulnerabilities > CVE-2016-7976 - Improper Input Validation vulnerability in Artifex Ghostscript 9.18/9.20

047910
CVSS 8.8 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
artifex
CWE-20
nessus
metasploit
NVD
Published: 2017-08-07
Updated: 2023-11-07

Summary

The PS Interpreter in Ghostscript 9.18 and 9.20 allows remote attackers to execute arbitrary code via crafted userparams.

Vulnerable Configurations

Part Description Count
Application
Artifex
2

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Metasploit

descriptionThis module exploits a shell command injection in the way "delegates" (commands for converting files) are processed in ImageMagick versions <= 7.0.1-0 and <= 6.9.3-9 (legacy). Since ImageMagick uses file magic to detect file format, you can create a .png (for example) which is actually a crafted SVG (for example) that triggers the command injection. The PostScript (PS) target leverages a Ghostscript -dSAFER bypass (discovered by taviso) to achieve RCE in the Ghostscript delegate. Ghostscript versions 9.18 and later are affected. This target is provided as is and will not be updated to track additional vulns. If USE_POPEN is set to true, a |-prefixed command will be used for the exploit. No delegates are involved in this exploitation.
idMSF:EXPLOIT/UNIX/FILEFORMAT/IMAGEMAGICK_DELEGATE
last seen2020-06-10
modified2019-04-24
published2016-05-03
references
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/unix/fileformat/imagemagick_delegate.rb
titleImageMagick Delegate Arbitrary Command Execution

Nessus

  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2020-1499.NASL
    descriptionAccording to the versions of the ghostscript package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - The PS Interpreter in Ghostscript 9.18 and 9.20 allows remote attackers to execute arbitrary code via crafted userparams.(CVE-2016-7976) - psi/zfile.c in Artifex Ghostscript before 9.21rc1 permits the status command even if -dSAFER is used, which might allow remote attackers to determine the existence and size of arbitrary files, a similar issue to CVE-2016-7977.(CVE-2018-11645) - A flaw was found in the .pdfexectoken and other procedures where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14817) - A flaw was found in the setsystemparams procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14813) - A flaw was found in the .setuserparams2 procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14812) - A flaw was found in the .pdf_hook_DSC_Creator procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14811) - libjbig2dec.a in Artifex jbig2dec 0.13, as used in MuPDF and Ghostscript, has a NULL pointer dereference in the jbig2_huffman_get function in jbig2_huffman.c. For example, the jbig2dec utility will crash (segmentation fault) when parsing an invalid file.(CVE-2017-9216) - Artifex jbig2dec 0.13, as used in Ghostscript, allows out-of-bounds writes because of an integer overflow in the jbig2_build_huffman_table function in jbig2_huffman.c during operations on a crafted JBIG2 file, leading to a denial of service (application crash) or possibly execution of arbitrary code.(CVE-2017-7975) - Artifex jbig2dec 0.13 has a heap-based buffer over-read leading to denial of service (application crash) or disclosure of sensitive information from process memory, because of an integer overflow in the jbig2_decode_symbol_dict function in jbig2_symbol_dict.c in libjbig2dec.a during operation on a crafted .jb2 file.(CVE-2017-7885) - Artifex jbig2dec 0.13 allows out-of-bounds writes and reads because of an integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file, leading to a denial of service (application crash) or disclosure of sensitive information from process memory.(CVE-2017-7976) - ghostscript before version 9.21 is vulnerable to a heap based buffer overflow that was found in the ghostscript jbig2_decode_gray_scale_image function which is used to decode halftone segments in a JBIG2 image. A document (PostScript or PDF) with an embedded, specially crafted, jbig2 image could trigger a segmentation fault in ghostscript.(CVE-2016-9601) - In Artifex Ghostscript before 9.26, a carefully crafted PDF file can trigger an extremely long running computation when parsing the file.(CVE-2018-19478) - It was found that the .buildfont1 procedure did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. An attacker could abuse this flaw by creating a specially crafted PostScript file that could escalate privileges and access files outside of restricted areas.(CVE-2019-10216) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-04-30
    modified2020-04-16
    plugin id135661
    published2020-04-16
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135661
    titleEulerOS Virtualization 3.0.2.2 : ghostscript (EulerOS-SA-2020-1499)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(135661);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/24");

  script_cve_id(
    "CVE-2016-7976",
    "CVE-2016-9601",
    "CVE-2017-7885",
    "CVE-2017-7975",
    "CVE-2017-7976",
    "CVE-2017-9216",
    "CVE-2018-11645",
    "CVE-2018-19478",
    "CVE-2019-10216",
    "CVE-2019-14811",
    "CVE-2019-14812",
    "CVE-2019-14813",
    "CVE-2019-14817"
  );

  script_name(english:"EulerOS Virtualization 3.0.2.2 : ghostscript (EulerOS-SA-2020-1499)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security
updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the ghostscript package installed, the
EulerOS Virtualization installation on the remote host is affected by
the following vulnerabilities :

  - The PS Interpreter in Ghostscript 9.18 and 9.20 allows
    remote attackers to execute arbitrary code via crafted
    userparams.(CVE-2016-7976)

  - psi/zfile.c in Artifex Ghostscript before 9.21rc1
    permits the status command even if -dSAFER is used,
    which might allow remote attackers to determine the
    existence and size of arbitrary files, a similar issue
    to CVE-2016-7977.(CVE-2018-11645)

  - A flaw was found in the .pdfexectoken and other
    procedures where it did not properly secure its
    privileged calls, enabling scripts to bypass `-dSAFER`
    restrictions. A specially crafted PostScript file could
    disable security protection and then have access to the
    file system, or execute arbitrary
    commands.(CVE-2019-14817)

  - A flaw was found in the setsystemparams procedure where
    it did not properly secure its privileged calls,
    enabling scripts to bypass `-dSAFER` restrictions. A
    specially crafted PostScript file could disable
    security protection and then have access to the file
    system, or execute arbitrary commands.(CVE-2019-14813)

  - A flaw was found in the .setuserparams2 procedure where
    it did not properly secure its privileged calls,
    enabling scripts to bypass `-dSAFER` restrictions. A
    specially crafted PostScript file could disable
    security protection and then have access to the file
    system, or execute arbitrary commands.(CVE-2019-14812)

  - A flaw was found in the .pdf_hook_DSC_Creator procedure
    where it did not properly secure its privileged calls,
    enabling scripts to bypass `-dSAFER` restrictions. A
    specially crafted PostScript file could disable
    security protection and then have access to the file
    system, or execute arbitrary commands.(CVE-2019-14811)

  - libjbig2dec.a in Artifex jbig2dec 0.13, as used in
    MuPDF and Ghostscript, has a NULL pointer dereference
    in the jbig2_huffman_get function in jbig2_huffman.c.
    For example, the jbig2dec utility will crash
    (segmentation fault) when parsing an invalid
    file.(CVE-2017-9216)

  - Artifex jbig2dec 0.13, as used in Ghostscript, allows
    out-of-bounds writes because of an integer overflow in
    the jbig2_build_huffman_table function in
    jbig2_huffman.c during operations on a crafted JBIG2
    file, leading to a denial of service (application
    crash) or possibly execution of arbitrary
    code.(CVE-2017-7975)

  - Artifex jbig2dec 0.13 has a heap-based buffer over-read
    leading to denial of service (application crash) or
    disclosure of sensitive information from process
    memory, because of an integer overflow in the
    jbig2_decode_symbol_dict function in
    jbig2_symbol_dict.c in libjbig2dec.a during operation
    on a crafted .jb2 file.(CVE-2017-7885)

  - Artifex jbig2dec 0.13 allows out-of-bounds writes and
    reads because of an integer overflow in the
    jbig2_image_compose function in jbig2_image.c during
    operations on a crafted .jb2 file, leading to a denial
    of service (application crash) or disclosure of
    sensitive information from process
    memory.(CVE-2017-7976)

  - ghostscript before version 9.21 is vulnerable to a heap
    based buffer overflow that was found in the ghostscript
    jbig2_decode_gray_scale_image function which is used to
    decode halftone segments in a JBIG2 image. A document
    (PostScript or PDF) with an embedded, specially
    crafted, jbig2 image could trigger a segmentation fault
    in ghostscript.(CVE-2016-9601)

  - In Artifex Ghostscript before 9.26, a carefully crafted
    PDF file can trigger an extremely long running
    computation when parsing the file.(CVE-2018-19478)

  - It was found that the .buildfont1 procedure did not
    properly secure its privileged calls, enabling scripts
    to bypass `-dSAFER` restrictions. An attacker could
    abuse this flaw by creating a specially crafted
    PostScript file that could escalate privileges and
    access files outside of restricted
    areas.(CVE-2019-10216)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1499
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ce7df4f5");
  script_set_attribute(attribute:"solution", value:
"Update the affected ghostscript packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ghostscript");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.2.2");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.2.2") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.2.2");
if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["ghostscript-9.07-31.6.h13.eulerosv2r7"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ghostscript");
}
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3148-1.NASL
    descriptionTavis Ormandy discovered multiple vulnerabilities in the way that Ghostscript processes certain Postscript files. If a user or automated system were tricked into opening a specially crafted file, an attacker could cause a denial of service or possibly execute arbitrary code. (CVE-2016-7976, CVE-2016-7978, CVE-2016-7979, CVE-2016-8602) Multiple vulnerabilities were discovered in Ghostscript related to information disclosure. If a user or automated system were tricked into opening a specially crafted file, an attacker could expose sensitive data. (CVE-2013-5653, CVE-2016-7977). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id95467
    published2016-12-02
    reporterUbuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/95467
    titleUbuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : ghostscript vulnerabilities (USN-3148-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3148-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(95467);
  script_version("3.10");
  script_cvs_date("Date: 2019/09/18 12:31:46");

  script_cve_id("CVE-2013-5653", "CVE-2016-7976", "CVE-2016-7977", "CVE-2016-7978", "CVE-2016-7979", "CVE-2016-8602");
  script_xref(name:"USN", value:"3148-1");

  script_name(english:"Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : ghostscript vulnerabilities (USN-3148-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Tavis Ormandy discovered multiple vulnerabilities in the way that
Ghostscript processes certain Postscript files. If a user or automated
system were tricked into opening a specially crafted file, an attacker
could cause a denial of service or possibly execute arbitrary code.
(CVE-2016-7976, CVE-2016-7978, CVE-2016-7979, CVE-2016-8602)

Multiple vulnerabilities were discovered in Ghostscript related to
information disclosure. If a user or automated system were tricked
into opening a specially crafted file, an attacker could expose
sensitive data. (CVE-2013-5653, CVE-2016-7977).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/3148-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ghostscript");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ghostscript-x");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgs9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgs9-common");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/12/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/12/02");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(12\.04|14\.04|16\.04|16\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04 / 14.04 / 16.04 / 16.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"12.04", pkgname:"ghostscript", pkgver:"9.05~dfsg-0ubuntu4.4")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"ghostscript-x", pkgver:"9.05~dfsg-0ubuntu4.4")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libgs9", pkgver:"9.05~dfsg-0ubuntu4.4")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libgs9-common", pkgver:"9.05~dfsg-0ubuntu4.4")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"ghostscript", pkgver:"9.10~dfsg-0ubuntu10.5")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"ghostscript-x", pkgver:"9.10~dfsg-0ubuntu10.5")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"libgs9", pkgver:"9.10~dfsg-0ubuntu10.5")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"libgs9-common", pkgver:"9.10~dfsg-0ubuntu10.5")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"ghostscript", pkgver:"9.18~dfsg~0-0ubuntu2.2")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"ghostscript-x", pkgver:"9.18~dfsg~0-0ubuntu2.2")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"libgs9", pkgver:"9.18~dfsg~0-0ubuntu2.2")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"libgs9-common", pkgver:"9.18~dfsg~0-0ubuntu2.2")) flag++;
if (ubuntu_check(osver:"16.10", pkgname:"ghostscript", pkgver:"9.19~dfsg+1-0ubuntu6.2")) flag++;
if (ubuntu_check(osver:"16.10", pkgname:"ghostscript-x", pkgver:"9.19~dfsg+1-0ubuntu6.2")) flag++;
if (ubuntu_check(osver:"16.10", pkgname:"libgs9", pkgver:"9.19~dfsg+1-0ubuntu6.2")) flag++;
if (ubuntu_check(osver:"16.10", pkgname:"libgs9-common", pkgver:"9.19~dfsg+1-0ubuntu6.2")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ghostscript / ghostscript-x / libgs9 / libgs9-common");
}
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-3691.NASL
    descriptionSeveral vulnerabilities were discovered in Ghostscript, the GPL PostScript/PDF interpreter, which may lead to the execution of arbitrary code or information disclosure if a specially crafted Postscript file is processed.
    last seen2020-06-01
    modified2020-06-02
    plugin id94023
    published2016-10-13
    reporterThis script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/94023
    titleDebian DSA-3691-1 : ghostscript - security update
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-3691. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(94023);
  script_version("2.9");
  script_cvs_date("Date: 2018/11/10 11:49:38");

  script_cve_id("CVE-2013-5653", "CVE-2016-7976", "CVE-2016-7977", "CVE-2016-7978", "CVE-2016-7979", "CVE-2016-8602");
  script_xref(name:"DSA", value:"3691");

  script_name(english:"Debian DSA-3691-1 : 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:
"Several vulnerabilities were discovered in Ghostscript, the GPL
PostScript/PDF interpreter, which may lead to the execution of
arbitrary code or information disclosure if a specially crafted
Postscript file is processed."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839118"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839260"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839841"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839845"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839846"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=840451"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/ghostscript"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2016/dsa-3691"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the ghostscript packages.

For the stable distribution (jessie), these problems have been fixed
in version 9.06~dfsg-2+deb8u3."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  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:8.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/10/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/10/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2018 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:"8.0", prefix:"ghostscript", reference:"9.06~dfsg-2+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"ghostscript-dbg", reference:"9.06~dfsg-2+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"ghostscript-doc", reference:"9.06~dfsg-2+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"ghostscript-x", reference:"9.06~dfsg-2+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"libgs-dev", reference:"9.06~dfsg-2+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"libgs9", reference:"9.06~dfsg-2+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"libgs9-common", reference:"9.06~dfsg-2+deb8u3")) 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");
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-2151.NASL
    descriptionAccording to the versions of the ghostscript packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - psi/zfile.c in Artifex Ghostscript before 9.21rc1 permits the status command even if -dSAFER is used, which might allow remote attackers to determine the existence and size of arbitrary files, a similar issue to CVE-2016-7977.(CVE-2018-11645) - The PS Interpreter in Ghostscript 9.18 and 9.20 allows remote attackers to execute arbitrary code via crafted userparams.(CVE-2016-7976) - A flaw was found in, ghostscript versions prior to 9.28, in the .pdf_hook_DSC_Creator procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14811) - A flaw was found in the .setuserparams2 procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14812) - A flaw was found in the setsystemparams procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14813) - A flaw was found in the .pdfexectoken and other procedures where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14817) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-08
    modified2019-11-12
    plugin id130860
    published2019-11-12
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130860
    titleEulerOS 2.0 SP5 : ghostscript (EulerOS-SA-2019-2151)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(130860);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/07");

  script_cve_id(
    "CVE-2016-7976",
    "CVE-2018-11645",
    "CVE-2019-14811",
    "CVE-2019-14812",
    "CVE-2019-14813",
    "CVE-2019-14817"
  );
  script_xref(name:"IAVB", value:"2019-B-0081");

  script_name(english:"EulerOS 2.0 SP5 : ghostscript (EulerOS-SA-2019-2151)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the ghostscript packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - psi/zfile.c in Artifex Ghostscript before 9.21rc1
    permits the status command even if -dSAFER is used,
    which might allow remote attackers to determine the
    existence and size of arbitrary files, a similar issue
    to CVE-2016-7977.(CVE-2018-11645)

  - The PS Interpreter in Ghostscript 9.18 and 9.20 allows
    remote attackers to execute arbitrary code via crafted
    userparams.(CVE-2016-7976)

  - A flaw was found in, ghostscript versions prior to
    9.28, in the .pdf_hook_DSC_Creator procedure where it
    did not properly secure its privileged calls, enabling
    scripts to bypass `-dSAFER` restrictions. A specially
    crafted PostScript file could disable security
    protection and then have access to the file system, or
    execute arbitrary commands.(CVE-2019-14811)

  - A flaw was found in the .setuserparams2 procedure where
    it did not properly secure its privileged calls,
    enabling scripts to bypass `-dSAFER` restrictions. A
    specially crafted PostScript file could disable
    security protection and then have access to the file
    system, or execute arbitrary commands.(CVE-2019-14812)

  - A flaw was found in the setsystemparams procedure where
    it did not properly secure its privileged calls,
    enabling scripts to bypass `-dSAFER` restrictions. A
    specially crafted PostScript file could disable
    security protection and then have access to the file
    system, or execute arbitrary commands.(CVE-2019-14813)

  - A flaw was found in the .pdfexectoken and other
    procedures where it did not properly secure its
    privileged calls, enabling scripts to bypass `-dSAFER`
    restrictions. A specially crafted PostScript file could
    disable security protection and then have access to the
    file system, or execute arbitrary
    commands.(CVE-2019-14817)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-2151
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9efc15d0");
  script_set_attribute(attribute:"solution", value:
"Update the affected ghostscript packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ghostscript");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ghostscript-cups");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(5)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["ghostscript-9.07-31.6.h8.eulerosv2r7",
        "ghostscript-cups-9.07-31.6.h8.eulerosv2r7"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"5", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ghostscript");
}
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-1C13825502.NASL
    descriptionThis is a rebase of **ghostscript** package, to address several security issues : - [CVE-2016-7977 ](https://bugzilla.redhat.com/show_bug.cgi?id=1380415) - *.libfile does not honor -dSAFER* - [CVE-2013-5653](https://bugzilla.redhat.com/show_bug.cgi ?id=1380327) - *getenv and filenameforall ignore -dSAFER* - [CVE-2016-7976](https://bugzilla.redhat.com/show_bug.cgi ?id=1382294) - *various userparams allow %pipe% in paths, allowing remote shell* - [CVE-2016-7978](https://bugzilla.redhat.com/show_bug.cgi ?id=1382300) - *reference leak in .setdevice allows use-after-free and remote code* - [CVE-2016-7979](https://bugzilla.redhat.com/show_bug.cgi ?id=1382305) - *Type confusion in .initialize_dsc_parser allows remote code execution* ----------- #### INFORMATION FOR FEDORA PACKAGERS & MAINTAINERS : **ghostscript** has been rebased to latest upstream version (9.20). Rebase notes : - **no API/ABI changes between versions 9.16 -> 9.20 according to upstream** - *OpenJPEG* support has been retained - *ijs-config* custom tool from upstream has been *removed* (by upstream) (*pkg-config* is used by default now instead, see [commit 0c176a9](http://git.ghostscript.com/?p=ghostpdl.git;h=0c 176a91d53c85cda)) - some patches were updated to
    last seen2020-06-05
    modified2016-10-19
    plugin id94119
    published2016-10-19
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/94119
    titleFedora 23 : ghostscript (2016-1c13825502)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2016-1c13825502.
#

include("compat.inc");

if (description)
{
  script_id(94119);
  script_version("2.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2013-5653", "CVE-2016-7976", "CVE-2016-7977", "CVE-2016-7978", "CVE-2016-7979");
  script_xref(name:"FEDORA", value:"2016-1c13825502");

  script_name(english:"Fedora 23 : ghostscript (2016-1c13825502)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This is a rebase of **ghostscript** package, to address several
security issues :

  - [CVE-2016-7977
    ](https://bugzilla.redhat.com/show_bug.cgi?id=1380415) -
    *.libfile does not honor -dSAFER*

  -
    [CVE-2013-5653](https://bugzilla.redhat.com/show_bug.cgi
    ?id=1380327) - *getenv and filenameforall ignore
    -dSAFER*

  -
    [CVE-2016-7976](https://bugzilla.redhat.com/show_bug.cgi
    ?id=1382294) - *various userparams allow %pipe% in
    paths, allowing remote shell*

  -
    [CVE-2016-7978](https://bugzilla.redhat.com/show_bug.cgi
    ?id=1382300) - *reference leak in .setdevice allows
    use-after-free and remote code*

  -
    [CVE-2016-7979](https://bugzilla.redhat.com/show_bug.cgi
    ?id=1382305) - *Type confusion in .initialize_dsc_parser
    allows remote code execution*

----------- #### INFORMATION FOR FEDORA PACKAGERS & MAINTAINERS :

**ghostscript** has been rebased to latest upstream version (9.20).
Rebase notes :

  - **no API/ABI changes between versions 9.16 -> 9.20
    according to upstream**

  - *OpenJPEG* support has been retained

  - *ijs-config* custom tool from upstream has been
    *removed* (by upstream) (*pkg-config* is used by default
    now instead, see [commit
    0c176a9](http://git.ghostscript.com/?p=ghostpdl.git;h=0c
    176a91d53c85cda))

  - some patches were updated to 'git format-patch' format &
    renamed

  - rest of the patches were deleted (irrelevant for current
    version), mostly because upstream has fixed those issues
    in some way

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as
possible without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bodhi.fedoraproject.org/updates/FEDORA-2016-1c13825502"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1380327"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1380415"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1382294"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1382300"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1382305"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected ghostscript package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:ghostscript");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:23");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/10/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/10/19");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^23([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 23", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);


flag = 0;
if (rpm_check(release:"FC23", reference:"ghostscript-9.20-2.fc23")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ghostscript");
}
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201702-31.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201702-31 (GPL Ghostscript: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in GPL Ghostscript and the bundled OpenJPEG. Please review the CVE identifiers and GLSA-201612-26 (OpenJPEG) referenced below for additional information. Note: GPL Ghostscript in Gentoo since app-text/ghostscript-gpl-9.20-r1 no longer bundles OpenJPEG. Impact : A context-dependent attacker could entice a user to open a specially crafted PostScript file or PDF using GPL Ghostscript possibly resulting in the execution of arbitrary code with the privileges of the process or a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id97343
    published2017-02-23
    reporterThis script is Copyright (C) 2017-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/97343
    titleGLSA-201702-31 : GPL Ghostscript: Multiple vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201702-31.
#
# The advisory text is Copyright (C) 2001-2018 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(97343);
  script_version("$Revision: 3.4 $");
  script_cvs_date("$Date: 2018/01/26 17:15:57 $");

  script_cve_id("CVE-2016-7976", "CVE-2016-7977", "CVE-2016-7978", "CVE-2016-7979", "CVE-2016-8602");
  script_xref(name:"GLSA", value:"201702-31");

  script_name(english:"GLSA-201702-31 : GPL Ghostscript: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-201702-31
(GPL Ghostscript: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in GPL Ghostscript and the
      bundled OpenJPEG. Please review the CVE identifiers and GLSA-201612-26
      (OpenJPEG) referenced below for additional information.
    Note: GPL Ghostscript in Gentoo since app-text/ghostscript-gpl-9.20-r1
      no longer bundles OpenJPEG.
  
Impact :

    A context-dependent attacker could entice a user to open a specially
      crafted PostScript file or PDF using GPL Ghostscript possibly resulting
      in the execution of arbitrary code with the privileges of the process or
      a Denial of Service condition.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201612-26"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201702-31"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All GPL Ghostscript users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose
      '>=app-text/ghostscript-gpl-9.20-r1'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:ghostscript-gpl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/02/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/02/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2018 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"app-text/ghostscript-gpl", unaffected:make_list("ge 9.20-r1"), vulnerable:make_list("lt 9.20-r1"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "GPL Ghostscript");
}
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2020-1240.NASL
    descriptionAccording to the versions of the ghostscript package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - The PS Interpreter in Ghostscript 9.18 and 9.20 allows remote attackers to execute arbitrary code via crafted userparams.(CVE-2016-7976) - psi/zfile.c in Artifex Ghostscript before 9.21rc1 permits the status command even if -dSAFER is used, which might allow remote attackers to determine the existence and size of arbitrary files, a similar issue to CVE-2016-7977.(CVE-2018-11645) - A flaw was found in, ghostscript versions prior to 9.50, in the .pdfexectoken and other procedures where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14817) - A flaw was found in ghostscript, versions 9.x before 9.50, in the setsystemparams procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14813) - A flaw was found in all ghostscript versions 9.x before 9.50, in the .setuserparams2 procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14812) - A flaw was found in, ghostscript versions prior to 9.50, in the .pdf_hook_DSC_Creator procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.(CVE-2019-14811) - libjbig2dec.a in Artifex jbig2dec 0.13, as used in MuPDF and Ghostscript, has a NULL pointer dereference in the jbig2_huffman_get function in jbig2_huffman.c. For example, the jbig2dec utility will crash (segmentation fault) when parsing an invalid file.(CVE-2017-9216) - Artifex jbig2dec 0.13, as used in Ghostscript, allows out-of-bounds writes because of an integer overflow in the jbig2_build_huffman_table function in jbig2_huffman.c during operations on a crafted JBIG2 file, leading to a denial of service (application crash) or possibly execution of arbitrary code.(CVE-2017-7975) - Artifex jbig2dec 0.13 has a heap-based buffer over-read leading to denial of service (application crash) or disclosure of sensitive information from process memory, because of an integer overflow in the jbig2_decode_symbol_dict function in jbig2_symbol_dict.c in libjbig2dec.a during operation on a crafted .jb2 file.(CVE-2017-7885) - Artifex jbig2dec 0.13 allows out-of-bounds writes and reads because of an integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file, leading to a denial of service (application crash) or disclosure of sensitive information from process memory.(CVE-2017-7976) - A heap based buffer overflow was found in the ghostscript jbig2_decode_gray_scale_image() function used to decode halftone segments in a JBIG2 image. A document (PostScript or PDF) with an embedded, specially crafted, jbig2 image could trigger a segmentation fault in ghostscript.(CVE-2016-9601) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-03-19
    modified2020-03-13
    plugin id134529
    published2020-03-13
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134529
    titleEulerOS Virtualization for ARM 64 3.0.2.0 : ghostscript (EulerOS-SA-2020-1240)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-53E8AA35F6.NASL
    descriptionThis is a rebase of **ghostscript** package, to address several security issues : - [CVE-2016-7977 ](https://bugzilla.redhat.com/show_bug.cgi?id=1380415) - *.libfile does not honor -dSAFER* - [CVE-2013-5653](https://bugzilla.redhat.com/show_bug.cgi ?id=1380327) - *getenv and filenameforall ignore -dSAFER* - [CVE-2016-7976](https://bugzilla.redhat.com/show_bug.cgi ?id=1382294) - *various userparams allow %pipe% in paths, allowing remote shell* - [CVE-2016-7978](https://bugzilla.redhat.com/show_bug.cgi ?id=1382300) - *reference leak in .setdevice allows use-after-free and remote code* - [CVE-2016-7979](https://bugzilla.redhat.com/show_bug.cgi ?id=1382305) - *Type confusion in .initialize_dsc_parser allows remote code execution* ----------- #### INFORMATION FOR FEDORA PACKAGERS & MAINTAINERS : **ghostscript** has been rebased to latest upstream version (9.20). Rebase notes : - **no API/ABI changes between versions 9.16 -> 9.20 according to upstream** - *OpenJPEG* support has been retained - *ijs-config* custom tool from upstream has been *removed* (by upstream) (*pkg-config* is used by default now instead, see [commit 0c176a9](http://git.ghostscript.com/?p=ghostpdl.git;h=0c 176a91d53c85cda)) - some patches were updated to
    last seen2020-06-05
    modified2016-10-19
    plugin id94121
    published2016-10-19
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/94121
    titleFedora 24 : ghostscript (2016-53e8aa35f6)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-2DF27A2224.NASL
    descriptionThis is a rebase of **ghostscript** package, to address several security issues : - [CVE-2016-7977 ](https://bugzilla.redhat.com/show_bug.cgi?id=1380415) - *.libfile does not honor -dSAFER* - [CVE-2013-5653](https://bugzilla.redhat.com/show_bug.cgi ?id=1380327) - *getenv and filenameforall ignore -dSAFER* - [CVE-2016-7976](https://bugzilla.redhat.com/show_bug.cgi ?id=1382294) - *various userparams allow %pipe% in paths, allowing remote shell* - [CVE-2016-7978](https://bugzilla.redhat.com/show_bug.cgi ?id=1382300) - *reference leak in .setdevice allows use-after-free and remote code* - [CVE-2016-7979](https://bugzilla.redhat.com/show_bug.cgi ?id=1382305) - *Type confusion in .initialize_dsc_parser allows remote code execution* ----------- #### INFORMATION FOR FEDORA PACKAGERS & MAINTAINERS : **ghostscript** has been rebased to latest upstream version (9.20). Rebase notes : - **no API/ABI changes between versions 9.16 -> 9.20 according to upstream** - *OpenJPEG* support has been retained - *ijs-config* custom tool from upstream has been *removed* (by upstream) (*pkg-config* is used by default now instead, see [commit 0c176a9](http://git.ghostscript.com/?p=ghostpdl.git;h=0c 176a91d53c85cda)) - some patches were updated to
    last seen2020-06-05
    modified2016-11-15
    plugin id94786
    published2016-11-15
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/94786
    titleFedora 25 : ghostscript (2016-2df27a2224)

References