RedHat Update for ghostscript RHSA-2017:0013-01

# SPDX-FileCopyrightText: 2017 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.871737");
  script_version("2024-03-21T05:06:54+0000");
  script_tag(name:"last_modification", value:"2024-03-21 05:06:54 +0000 (Thu, 21 Mar 2024)");
  script_tag(name:"creation_date", value:"2017-01-05 05:42:26 +0100 (Thu, 05 Jan 2017)");
  script_cve_id("CVE-2013-5653", "CVE-2016-7977", "CVE-2016-7978", "CVE-2016-7979", "CVE-2016-8602");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-01-05 02:31:00 +0000 (Fri, 05 Jan 2018)");
  script_tag(name:"qod_type", value:"package");
  script_name("RedHat Update for ghostscript RHSA-2017:0013-01");
  script_tag(name:"summary", value:"The remote host is missing an update for the 'ghostscript'
  package(s) announced via the referenced advisory.");
  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
  script_tag(name:"insight", value:"The Ghostscript suite contains utilities for rendering PostScript and PDF
documents. Ghostscript translates PostScript code to common bitmap formats
so that the code can be displayed or printed.

Security Fix(es):

  * It was found that the ghostscript functions getenv, filenameforall and
.libfile did not honor the -dSAFER option, usually used when processing
untrusted documents, leading to information disclosure. A specially crafted
postscript document could read environment variable, list directory and
retrieve file content respectively, from the target. (CVE-2013-5653,
CVE-2016-7977)

  * It was found that the ghostscript function .setdevice suffered a
use-after-free vulnerability due to an incorrect reference count. A
specially crafted postscript document could trigger code execution in the
context of the gs process. (CVE-2016-7978)

  * It was found that the ghostscript function .initialize_dsc_parser did not
validate its parameter before using it, allowing a type confusion flaw. A
specially crafted postscript document could cause a crash code execution in
the context of the gs process. (CVE-2016-7979)

  * It was found that ghostscript did not sufficiently check the validity of
parameters given to the .sethalftone5 function. A specially crafted
postscript document could cause a crash, or execute arbitrary code in the
context of the gs process. (CVE-2016-8602)");
  script_tag(name:"affected", value:"ghostscript on Red Hat Enterprise Linux Server (v. 7)");
  script_tag(name:"solution", value:"Please Install the Updated Packages.");

  script_xref(name:"RHSA", value:"2017:0013-01");
  script_xref(name:"URL", value:"https://www.redhat.com/archives/rhsa-announce/2017-January/msg00004.html");
  script_tag(name:"solution_type", value:"VendorFix");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Red Hat Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/rhel", "ssh/login/rpms", re:"ssh/login/release=RHENT_7");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release) exit(0);

res = "";

if(release == "RHENT_7")
{

  if ((res = isrpmvuln(pkg:"ghostscript", rpm:"ghostscript~9.07~20.el7_3.1", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ghostscript-cups", rpm:"ghostscript-cups~9.07~20.el7_3.1", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ghostscript-debuginfo", rpm:"ghostscript-debuginfo~9.07~20.el7_3.1", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99);
  exit(0);
}