Vulnerabilities > CVE-2017-5884 - Range Error vulnerability in multiple products

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-831-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(97236);
  script_version("3.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2017-5884", "CVE-2017-5885");

  script_name(english:"Debian DLA-831-1 : gtk-vnc security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Josef Gajdusek discovered two vulnerabilities in gtk-vnc, a VNC viewer
widget for GTK :

CVE-2017-5884

Fix bounds checking for RRE, hextile & copyrec encodings. This bug
allowed a remote server to cause a denial of service by buffer
overflow via a carefully crafted message containing subrectangles
outside the drawing area.

CVE-2017-5885

Correctly validate color map range indexes. This bug allowed a remote
server to cause a denial of service by buffer overflow via a carefully
crafted message with out-of-range colour values.

For Debian 7 'Wheezy', these problems have been fixed in version
0.5.0-3.1+deb7u1.

We recommend that you upgrade your gtk-vnc packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA 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://lists.debian.org/debian-lts-announce/2017/02/msg00020.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/gtk-vnc"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade 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:debian:debian_linux:gir1.2-gtk-vnc-2.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gvncviewer");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgtk-vnc-1.0-0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgtk-vnc-1.0-0-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgtk-vnc-1.0-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgtk-vnc-2.0-0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgtk-vnc-2.0-0-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgtk-vnc-2.0-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgvnc-1.0-0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgvnc-1.0-0-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgvnc-1.0-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:mozilla-gtk-vnc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-gtk-vnc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/02/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/02/21");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2020 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:"7.0", prefix:"gir1.2-gtk-vnc-2.0", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"gvncviewer", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libgtk-vnc-1.0-0", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libgtk-vnc-1.0-0-dbg", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libgtk-vnc-1.0-dev", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libgtk-vnc-2.0-0", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libgtk-vnc-2.0-0-dbg", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libgtk-vnc-2.0-dev", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libgvnc-1.0-0", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libgvnc-1.0-0-dbg", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libgvnc-1.0-dev", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"mozilla-gtk-vnc", reference:"0.5.0-3.1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"python-gtk-vnc", reference:"0.5.0-3.1+deb7u1")) 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");

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(103019);
  script_version("3.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/04");

  script_cve_id(
    "CVE-2017-5884",
    "CVE-2017-5885"
  );

  script_name(english:"EulerOS 2.0 SP1 : gtk-vnc (EulerOS-SA-2017-1181)");
  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 gtk-vnc package installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - It was found that gtk-vnc lacked proper bounds checking
    while processing messages using RRE, hextile, or
    copyrect encodings. A remote malicious VNC server could
    use this flaw to crash VNC viewers which are based on
    the gtk-vnc library. (CVE-2017-5884)

  - An integer overflow flaw was found in gtk-vnc. A remote
    malicious VNC server could use this flaw to crash VNC
    viewers which are based on the gtk-vnc library.
    (CVE-2017-5885)

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-2017-1181
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e993a127");
  script_set_attribute(attribute:"solution", value:
"Update the affected gtk-vnc 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:"patch_publication_date", value:"2017/08/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/09/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:gtk-vnc2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  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) 2017-2020 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 !~ "^(1)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP1");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP1", "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 = ["gtk-vnc2-0.7.0-2"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"1", 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, "gtk-vnc");
}