Vulnerabilities > CVE-2014-6273 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Debian Advanced Package Tool

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-3031. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(77824);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2014-6273");
  script_xref(name:"DSA", value:"3031");

  script_name(english:"Debian DSA-3031-1 : apt - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The Google Security Team discovered a buffer overflow vulnerability in
the HTTP transport code in apt-get. An attacker able to
man-in-the-middle a HTTP request to an apt repository can trigger the
buffer overflow, leading to a crash of the 'http' apt method binary,
or potentially to arbitrary code execution.

Two regression fixes were included in this update :

  - Fix regression from the previous update in DSA-3025-1
    when the custom apt configuration option for
    Dir::state::lists is set to a relative path (#762160).
  - Fix regression in the reverification handling of cdrom:
    sources that may lead to incorrect hashsum warnings.
    Affected users need to run 'apt-cdrom add' again after
    the update was applied."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/apt"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2014/dsa-3031"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the apt packages.

For the stable distribution (wheezy), this problem has been fixed in
version 0.9.7.9+deb7u5."
  );
  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_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:apt");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/09/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/09/25");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 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:"apt", reference:"0.9.7.9+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"apt-doc", reference:"0.9.7.9+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"apt-transport-https", reference:"0.9.7.9+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"apt-utils", reference:"0.9.7.9+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"libapt-inst1.5", reference:"0.9.7.9+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"libapt-pkg-dev", reference:"0.9.7.9+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"libapt-pkg-doc", reference:"0.9.7.9+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"libapt-pkg4.12", reference:"0.9.7.9+deb7u5")) 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-2353-1. 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(77816);
  script_version("1.7");
  script_cvs_date("Date: 2019/09/19 12:54:30");

  script_cve_id("CVE-2014-6273");
  script_xref(name:"USN", value:"2353-1");

  script_name(english:"Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS : apt vulnerability (USN-2353-1)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that APT incorrectly handled certain http URLs. If a
remote attacker were able to perform a man-in-the-middle attack, this
flaw could be exploited to cause APT to crash, resulting in a denial
of service, or possibly execute arbitrary code. The default compiler
options for affected releases should reduce the vulnerability to a
denial of service. (CVE-2014-6273)

In addition, this update fixes regressions introduced by the
USN-2348-1 security update: APT incorrectly handled file:/// sources
on a different partition, incorrectly handled Dir::state::lists set to
a relative path, and incorrectly handled cdrom: sources.

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/2353-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected apt package.");
  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_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:canonical:ubuntu_linux:apt");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/09/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/09/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/09/24");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 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:"^(10\.04|12\.04|14\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 12.04 / 14.04", "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:"10.04", pkgname:"apt", pkgver:"0.7.25.3ubuntu9.17.1")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"apt", pkgver:"0.8.16~exp12ubuntu10.20.1")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"apt", pkgver:"1.0.1ubuntu2.4.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "apt");
}