Vulnerabilities > CVE-2018-20761 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products

047910
CVSS 6.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
gpac-project
debian
canonical
CWE-119
nessus
NVD
Published: 2019-02-06
Updated: 2019-04-15

Summary

GPAC version 0.7.1 and earlier has a Buffer Overflow vulnerability in the gf_sm_load_init function in scene_manager.c in libgpac_static.a.

Vulnerable Configurations

Part Description Count
Application
Gpac_Project
1
OS
Debian
1
OS
Canonical
3

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.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1693.NASL
    descriptionSeveral 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
    last seen2020-06-01
    modified2020-06-02
    plugin id122491
    published2019-02-28
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/122491
    titleDebian DLA-1693-1 : gpac security update
    code
    #
# (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");
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3926-1.NASL
    descriptionIt 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id123555
    published2019-04-01
    reporterUbuntu Security Notice (C) 2019-2020 Canonical, Inc. / NASL script (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/123555
    titleUbuntu 16.04 LTS / 18.04 LTS / 18.10 : gpac vulnerabilities (USN-3926-1)
    code
    #
# (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");
}

References