Vulnerabilities > CVE-2018-20763 - Out-of-bounds Write vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1693-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(122491);
  script_version("1.2");
  script_cvs_date("Date: 2020/02/07");

  script_cve_id("CVE-2018-20760", "CVE-2018-20761", "CVE-2018-20762", "CVE-2018-20763", "CVE-2018-7752");

  script_name(english:"Debian DLA-1693-1 : gpac 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:
"Several issues have been found by different authors in gpac, an Open
Source multimedia framework for research and academic purposes.

The issues are basically all buffer overflows in different functions
all over the package.

For Debian 8 'Jessie', these problems have been fixed in version
0.5.0+svn5324~dfsg1-1+deb8u2.

We recommend that you upgrade your gpac 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/2019/02/msg00040.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/gpac"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/AC:L/PR:N/UI:R/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:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gpac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gpac-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gpac-modules-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgpac-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgpac-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgpac3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/02/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 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:"8.0", prefix:"gpac", reference:"0.5.0+svn5324~dfsg1-1+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"gpac-dbg", reference:"0.5.0+svn5324~dfsg1-1+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"gpac-modules-base", reference:"0.5.0+svn5324~dfsg1-1+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"libgpac-dbg", reference:"0.5.0+svn5324~dfsg1-1+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"libgpac-dev", reference:"0.5.0+svn5324~dfsg1-1+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"libgpac3", reference:"0.5.0+svn5324~dfsg1-1+deb8u2")) flag++;

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

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3926-1. 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(123555);
  script_version("1.3");
  script_cvs_date("Date: 2020/01/27");

  script_cve_id("CVE-2018-1000100", "CVE-2018-13005", "CVE-2018-13006", "CVE-2018-20760", "CVE-2018-20761", "CVE-2018-20762", "CVE-2018-20763", "CVE-2018-7752");
  script_xref(name:"USN", value:"3926-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 18.10 : gpac vulnerabilities (USN-3926-1)");
  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:
"It was discovered that the GPAC MP4Box utility incorrectly handled
certain memory operations. If an user or automated system were tricked
into opening a specially crafted MP4 file, a remote attacker could use
this issue to cause MP4Box to crash, resulting in a denial of service,
or possibly execute arbitrary code.

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/3926-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Update the affected gpac, gpac-modules-base and / or libgpac4
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:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gpac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gpac-modules-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgpac4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/01");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2019-2020 Canonical, Inc. / NASL script (C) 2019-2020 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:"^(16\.04|18\.04|18\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 18.10", "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:"16.04", pkgname:"gpac", pkgver:"0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"gpac-modules-base", pkgver:"0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"libgpac4", pkgver:"0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"gpac", pkgver:"0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"gpac-modules-base", pkgver:"0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"libgpac4", pkgver:"0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"gpac", pkgver:"0.5.2-426-gc5ad4e4+dfsg5-4ubuntu0.1")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"gpac-modules-base", pkgver:"0.5.2-426-gc5ad4e4+dfsg5-4ubuntu0.1")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"libgpac4", pkgver:"0.5.2-426-gc5ad4e4+dfsg5-4ubuntu0.1")) 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, "gpac / gpac-modules-base / libgpac4");
}