Vulnerabilities > CVE-2006-2194 - Local Privilege Escalation vulnerability in PPPD Winbind Plugin

#%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-1106. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(22648);
  script_version("1.14");
  script_cvs_date("Date: 2019/08/02 13:32:19");

  script_cve_id("CVE-2006-2194");
  script_xref(name:"DSA", value:"1106");

  script_name(english:"Debian DSA-1106-1 : ppp - programming error");
  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:
"Marcus Meissner discovered that the winbind plugin in pppd does not
check whether a setuid() call has been successful when trying to drop
privileges, which may fail with some PAM configurations."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2006/dsa-1106"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the ppp package.

The old stable distribution (woody) is not affected by this problem.

For the stable distribution (sarge) this problem has been fixed in
version 2.4.3-20050321+2sarge1."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ppp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/07/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/10/14");
  script_set_attribute(attribute:"vuln_publication_date", value:"2006/07/05");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc.");
  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:"3.1", prefix:"ppp", reference:"2.4.3-20050321+2sarge1")) flag++;
if (deb_check(release:"3.1", prefix:"ppp-dev", reference:"2.4.3-20050321+2sarge1")) 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");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-310-1. 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(27885);
  script_version("1.14");
  script_cvs_date("Date: 2019/08/02 13:33:01");

  script_cve_id("CVE-2006-2194");
  script_xref(name:"USN", value:"310-1");

  script_name(english:"Ubuntu 5.10 / 6.06 LTS : ppp vulnerability (USN-310-1)");
  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:
"Marcus Meissner discovered that the winbind plugin of pppd does not
check the result of the setuid() call. On systems that configure PAM
limits for the maximum number of user processes and enable the winbind
plugin, a local attacker could exploit this to execute the winbind
NTLM authentication helper as root. Depending on the local winbind
configuration, this could potentially lead to privilege escalation.

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/310-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected ppp, ppp-dev and / or ppp-udeb packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ppp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ppp-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ppp-udeb");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.06:-:lts");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/07/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/11/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2007-2019 Canonical, Inc. / NASL script (C) 2018 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 (! ereg(pattern:"^(5\.10|6\.06)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 5.10 / 6.06", "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:"5.10", pkgname:"ppp", pkgver:"2.4.3-20050321+2ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"ppp-dev", pkgver:"2.4.3-20050321+2ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"ppp-udeb", pkgver:"2.4.3-20050321+2ubuntu1.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ppp", pkgver:"2.4.4b1-1ubuntu3.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ppp-dev", pkgver:"2.4.4b1-1ubuntu3.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ppp-udeb", pkgver:"2.4.4b1-1ubuntu3.1")) 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, "ppp / ppp-dev / ppp-udeb");
}

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandrake Linux Security Advisory MDKSA-2006:119. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(22019);
  script_version ("1.16");
  script_cvs_date("Date: 2019/08/02 13:32:48");

  script_cve_id("CVE-2006-2194");
  script_xref(name:"MDKSA", value:"2006:119");

  script_name(english:"Mandrake Linux Security Advisory : ppp (MDKSA-2006:119)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Mandrake Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Marcus Meissner discovered that pppd's winbind plugin did not check
for the result of the setuid() call which could allow an attacker to
exploit this on systems with certain PAM limits enabled to execute the
NTLM authentication helper as root. This could possibly lead to
privilege escalation dependent upon the local winbind configuration.

Updated packages have been patched ot correct this issue."
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ppp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ppp-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ppp-dhcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ppp-pppoatm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ppp-pppoe");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ppp-prompt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ppp-radius");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2006");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/07/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/07/11");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc.");
  script_family(english:"Mandriva Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/rpm-list");

  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);
if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);


flag = 0;
if (rpm_check(release:"MDK2006.0", reference:"ppp-2.4.3-9.1.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", reference:"ppp-devel-2.4.3-9.1.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", reference:"ppp-dhcp-2.4.3-9.1.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", reference:"ppp-pppoatm-2.4.3-9.1.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", reference:"ppp-pppoe-2.4.3-9.1.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", reference:"ppp-prompt-2.4.3-9.1.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", reference:"ppp-radius-2.4.3-9.1.20060mdk", yank:"mdk")) flag++;


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