Vulnerabilities > CVE-2016-2148 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
busybox
debian
canonical
CWE-119
critical
nessus
NVD
Published: 2017-02-09
Updated: 2021-02-22

Summary

Heap-based buffer overflow in the DHCP client (udhcpc) in BusyBox before 1.25.0 allows remote attackers to have unspecified impact via vectors involving OPTION_6RD parsing.

Vulnerable Configurations

Part Description Count
Application
Busybox
133
OS
Debian
2
OS
Canonical
4

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 familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201612-04.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201612-04 (BusyBox: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in BusyBox. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition. Workaround : There is no known workaround at this time. However, on Gentoo, the remote code execution vulnerability can be avoided if you don’t use BusyBox’s udhcpc or build the package without the “ipv6” USE flag enabled.
    last seen2020-06-01
    modified2020-06-02
    plugin id95519
    published2016-12-05
    reporterThis script is Copyright (C) 2016-2017 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/95519
    titleGLSA-201612-04 : BusyBox: 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 201612-04.
#
# The advisory text is Copyright (C) 2001-2017 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(95519);
  script_version("$Revision: 3.3 $");
  script_cvs_date("$Date: 2017/02/21 14:37:42 $");

  script_cve_id("CVE-2016-2147", "CVE-2016-2148");
  script_xref(name:"GLSA", value:"201612-04");

  script_name(english:"GLSA-201612-04 : BusyBox: 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-201612-04
(BusyBox: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in BusyBox. Please review
      the CVE identifiers referenced below for details.
  
Impact :

    A remote attacker could possibly execute arbitrary code with the
      privileges of the process, or cause a Denial of Service condition.
  
Workaround :

    There is no known workaround at this time. However, on Gentoo, the
      remote code execution vulnerability can be avoided if you don’t use
      BusyBox’s udhcpc or build the package without the “ipv6” USE flag
      enabled."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201612-04"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All BusyBox users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=sys-apps/busybox-1.24.2'"
  );
  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:busybox");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/12/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/12/05");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2017 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:"sys-apps/busybox", unaffected:make_list("ge 1.24.2"), vulnerable:make_list("lt 1.24.2"))) 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, "BusyBox");
}
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3935-1.NASL
    descriptionTyler Hicks discovered that BusyBox incorrectly handled symlinks inside tar archives. If a user or automated system were tricked into processing a specially crafted tar archive, a remote attacker could overwrite arbitrary files outside of the current directory. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2011-5325) Mathias Krause discovered that BusyBox incorrectly handled kernel module loading restrictions. A local attacker could possibly use this issue to bypass intended restrictions. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-9645) It was discovered that BusyBox incorrectly handled certain ZIP archives. If a user or automated system were tricked into processing a specially crafted ZIP archive, a remote attacker could cause BusyBox to crash, leading to a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2015-9261) Nico Golde discovered that the BusyBox DHCP client incorrectly handled certain malformed domain names. A remote attacker could possibly use this issue to cause the DHCP client to crash, leading to a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-2147) Nico Golde discovered that the BusyBox DHCP client incorrectly handled certain 6RD options. A remote attacker could use this issue to cause the DHCP client to crash, leading to a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-2148) It was discovered that BusyBox incorrectly handled certain bzip2 archives. If a user or automated system were tricked into processing a specially crafted bzip2 archive, a remote attacker could cause BusyBox to crash, leading to a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-15873) It was discovered that BusyBox incorrectly handled tab completion. A local attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-16544) It was discovered that the BusyBox wget utility incorrectly handled certain responses. A remote attacker could use this issue to cause BusyBox to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-1000517) It was discovered that the BusyBox DHCP utilities incorrectly handled certain memory operations. A remote attacker could possibly use this issue to access sensitive information. (CVE-2018-20679, CVE-2019-5747). 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 id123751
    published2019-04-04
    reporterUbuntu Security Notice (C) 2019 Canonical, Inc. / NASL script (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/123751
    titleUbuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : busybox vulnerabilities (USN-3935-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3935-1. 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(123751);
  script_version("1.3");
  script_cvs_date("Date: 2019/09/18 12:31:49");

  script_cve_id("CVE-2011-5325", "CVE-2014-9645", "CVE-2015-9261", "CVE-2016-2147", "CVE-2016-2148", "CVE-2017-15873", "CVE-2017-16544", "CVE-2018-1000517", "CVE-2018-20679", "CVE-2019-5747");
  script_xref(name:"USN", value:"3935-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : busybox vulnerabilities (USN-3935-1)");
  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:
"Tyler Hicks discovered that BusyBox incorrectly handled symlinks
inside tar archives. If a user or automated system were tricked into
processing a specially crafted tar archive, a remote attacker could
overwrite arbitrary files outside of the current directory. This issue
only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2011-5325)

Mathias Krause discovered that BusyBox incorrectly handled kernel
module loading restrictions. A local attacker could possibly use this
issue to bypass intended restrictions. This issue only affected Ubuntu
14.04 LTS. (CVE-2014-9645)

It was discovered that BusyBox incorrectly handled certain ZIP
archives. If a user or automated system were tricked into processing a
specially crafted ZIP archive, a remote attacker could cause BusyBox
to crash, leading to a denial of service. This issue only affected
Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2015-9261)

Nico Golde discovered that the BusyBox DHCP client incorrectly handled
certain malformed domain names. A remote attacker could possibly use
this issue to cause the DHCP client to crash, leading to a denial of
service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04
LTS. (CVE-2016-2147)

Nico Golde discovered that the BusyBox DHCP client incorrectly handled
certain 6RD options. A remote attacker could use this issue to cause
the DHCP client to crash, leading to a denial of service, or possibly
execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and
Ubuntu 16.04 LTS. (CVE-2016-2148)

It was discovered that BusyBox incorrectly handled certain bzip2
archives. If a user or automated system were tricked into processing a
specially crafted bzip2 archive, a remote attacker could cause BusyBox
to crash, leading to a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu
16.04 LTS. (CVE-2017-15873)

It was discovered that BusyBox incorrectly handled tab completion. A
local attacker could possibly use this issue to execute arbitrary
code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2017-16544)

It was discovered that the BusyBox wget utility incorrectly handled
certain responses. A remote attacker could use this issue to cause
BusyBox to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2018-1000517)

It was discovered that the BusyBox DHCP utilities incorrectly handled
certain memory operations. A remote attacker could possibly use this
issue to access sensitive information. (CVE-2018-20679, CVE-2019-5747).

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/3935-1/"
  );
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:busybox");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:busybox-initramfs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:busybox-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:udhcpc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:udhcpd");
  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:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/04");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2019 Canonical, Inc. / NASL script (C) 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:"^(14\.04|16\.04|18\.04|18\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 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:"14.04", pkgname:"busybox", pkgver:"1:1.21.0-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"busybox-initramfs", pkgver:"1:1.21.0-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"busybox-static", pkgver:"1:1.21.0-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"udhcpc", pkgver:"1:1.21.0-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"udhcpd", pkgver:"1:1.21.0-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"busybox", pkgver:"1:1.22.0-15ubuntu1.4")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"busybox-initramfs", pkgver:"1:1.22.0-15ubuntu1.4")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"busybox-static", pkgver:"1:1.22.0-15ubuntu1.4")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"udhcpc", pkgver:"1:1.22.0-15ubuntu1.4")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"udhcpd", pkgver:"1:1.22.0-15ubuntu1.4")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"busybox", pkgver:"1:1.27.2-2ubuntu3.2")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"busybox-initramfs", pkgver:"1:1.27.2-2ubuntu3.2")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"busybox-static", pkgver:"1:1.27.2-2ubuntu3.2")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"udhcpc", pkgver:"1:1.27.2-2ubuntu3.2")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"udhcpd", pkgver:"1:1.27.2-2ubuntu3.2")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"busybox", pkgver:"1:1.27.2-2ubuntu4.1")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"busybox-initramfs", pkgver:"1:1.27.2-2ubuntu4.1")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"busybox-static", pkgver:"1:1.27.2-2ubuntu4.1")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"udhcpc", pkgver:"1:1.27.2-2ubuntu4.1")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"udhcpd", pkgver:"1:1.27.2-2ubuntu4.1")) 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, "busybox / busybox-initramfs / busybox-static / udhcpc / udhcpd");
}

Packetstorm

References