Vulnerabilities > CVE-2002-1403 - Remote Command Execution vulnerability in DHCPCD Character Expansion

#%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-219. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(15056);
  script_version("1.19");
  script_cvs_date("Date: 2019/08/02 13:32:17");

  script_cve_id("CVE-2002-1403");
  script_bugtraq_id(6200);
  script_xref(name:"DSA", value:"219");

  script_name(english:"Debian DSA-219-1 : dhcpcd - remote command execution");
  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:
"Simon Kelly discovered a vulnerability in dhcpcd, an RFC2131 and
RFC1541 compliant DHCP client daemon, that runs with root privileges
on client machines. A malicious administrator of the regular or an
untrusted DHCP server may execute any command with root privileges on
the DHCP client machine by sending the command enclosed in shell
metacharacters in one of the options provided by the DHCP server."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2002/dsa-219"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the dhcpcd package (on the client machine).

This problem has been fixed in version 1.3.17pl2-8.1 for the old
stable distribution (potato) and in version 1.3.22pl2-2 for the
testing (sarge) and unstable (sid) distributions. The current stable
distribution (woody) does not contain a dhcpcd package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  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:dhcpcd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:2.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2002/12/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 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:"2.2", prefix:"dhcpcd", reference:"1.3.17pl2-8.1")) 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 Mandrake Linux Security Advisory MDKSA-2003:003. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(13988);
  script_version ("1.19");
  script_cvs_date("Date: 2019/08/02 13:32:46");

  script_cve_id("CVE-2002-1403", "CVE-2003-0066");
  script_xref(name:"MDKSA", value:"2003:003");

  script_name(english:"Mandrake Linux Security Advisory : dhcpcd (MDKSA-2003:003)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Mandrake Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A vulnerability was discovered by Simon Kelley in the dhcpcd DHCP
client daemon. dhcpcd has the ability to execute an external script
named dhcpcd-<interface>.exe when an IP address is assigned to that
network interface. The script sources the file
/var/lib/dhcpcd/dhcpcd-<interface>.info which contains shell variables
and DHCP assignment information. The way quotes are handled inside
these assignments is flawed, and a malicious DHCP server can execute
arbitrary shell commands on the vulnerable DHCP client system. This
can also be exploited by an attacker able to spoof DHCP responses.

Mandrake Linux packages contain a sample /etc/dhcpc/dhcpcd.exe file
and encourages all users to upgrade immediately. Please note that when
you do upgrade, you will have to restart the network for the changes
to take proper effect by issuing 'service network restart' as root."
  );
  # http://www.phystech.com/download/dhcdcd_changelog.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.helpnetsecurity.com?id=1473"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected dhcpcd package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:dhcpcd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:7.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:8.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:8.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:8.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:9.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2003/01/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/07/31");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 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:"MDK7.2", cpu:"i386", reference:"dhcpcd-1.3.22pl4-1.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK8.0", cpu:"i386", reference:"dhcpcd-1.3.22pl4-1.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK8.1", cpu:"i386", reference:"dhcpcd-1.3.22pl4-1.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK8.2", cpu:"i386", reference:"dhcpcd-1.3.22pl4-1.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK9.0", cpu:"i386", reference:"dhcpcd-1.3.22pl4-1.1mdk", 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");