Vulnerabilities > CVE-2002-1174 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Fetchmail

#%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-2002:063. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(13964);
  script_version ("1.15");
  script_cvs_date("Date: 2019/08/02 13:32:46");

  script_cve_id("CVE-2002-1174", "CVE-2002-1175");
  script_xref(name:"MDKSA", value:"2002:063");

  script_name(english:"Mandrake Linux Security Advisory : fetchmail (MDKSA-2002:063)");
  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:
"Several buffer overflows and a boundary check error were discovered in
all fetchmail versions prior to 6.1.0 by e-matters GmbH. These
problems are vulnerable to crashes and/or arbitrary code execution by
remote attackers if fetchmail is running in multidrop mode. The code
execution would be done with the same privilege as the user running
fetchmail."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://security.e-matters.de/advisories/032002.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Update the affected fetchmail, fetchmail-daemon and / or fetchmailconf
packages."
  );
  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:fetchmail");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:fetchmail-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:fetchmailconf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:7.1");
  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:"2002/10/01");
  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:"MDK7.1", cpu:"i386", reference:"fetchmail-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK7.1", cpu:"i386", reference:"fetchmail-daemon-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK7.1", cpu:"i386", reference:"fetchmailconf-6.1.0-0.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK7.2", cpu:"i386", reference:"fetchmail-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK7.2", cpu:"i386", reference:"fetchmail-daemon-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK7.2", cpu:"i386", reference:"fetchmailconf-6.1.0-0.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK8.0", cpu:"i386", reference:"fetchmail-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK8.0", cpu:"i386", reference:"fetchmail-daemon-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK8.0", cpu:"i386", reference:"fetchmailconf-6.1.0-0.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK8.1", cpu:"i386", reference:"fetchmail-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK8.1", cpu:"i386", reference:"fetchmail-daemon-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK8.1", cpu:"i386", reference:"fetchmailconf-6.1.0-0.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK8.2", cpu:"i386", reference:"fetchmail-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK8.2", cpu:"i386", reference:"fetchmail-daemon-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK8.2", cpu:"i386", reference:"fetchmailconf-6.1.0-0.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK9.0", cpu:"i386", reference:"fetchmail-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK9.0", cpu:"i386", reference:"fetchmail-daemon-6.1.0-0.1mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK9.0", cpu:"i386", reference:"fetchmailconf-6.1.0-0.1mdk", 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");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2002:216. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(12327);
  script_version ("1.26");
  script_cvs_date("Date: 2019/10/25 13:36:10");

  script_cve_id("CVE-2002-1174", "CVE-2002-1175");
  script_xref(name:"CERT", value:"738331");
  script_xref(name:"RHSA", value:"2002:216");

  script_name(english:"RHEL 2.1 : fetchmail (RHSA-2002:216)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated Fetchmail packages are available for Red Hat Linux Advanced
Server which close a remotely-exploitable vulnerability in unpatched
versions of Fetchmail prior to 6.1.0.

Fetchmail is a remote mail retrieval and forwarding utility intended
for use over on-demand TCP/IP links such as SLIP and PPP connections.
Two bugs have been found in the header parsing code in versions of
Fetchmail prior to 6.1.0.

The first bug allows a remote attacker to crash Fetchmail by sending a
carefully crafted DNS packet. The second bug allows a remote attacker
to carefully craft an email in such a way that when it is parsed by
Fetchmail a heap overflow occurs, allowing remote arbitrary code
execution.

Both of these bugs are only exploitable if Fetchmail is being used in
multidrop mode (using the 'multiple-local-recipients' feature).

All users of Fetchmail are advised to upgrade to the errata packages
containing a backported fix which is not vulnerable to these issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2002-1174"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2002-1175"
  );
  # http://tuxedo.org/~esr/fetchmail/NEWS
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?38f785bd"
  );
  # http://security.e-matters.de/advisories/032002.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.e-matters.de/unternehmen/news/security-advisory-03_2002"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2002:216"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected fetchmail and / or fetchmailconf packages."
  );
  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:redhat:enterprise_linux:fetchmail");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:fetchmailconf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:2.1");

  script_set_attribute(attribute:"vuln_publication_date", value:"2002/10/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2002/10/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/07/06");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^2\.1([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 2.1", "Red Hat " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
if (cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i386", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2002:216";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"fetchmail-5.9.0-20")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"fetchmailconf-5.9.0-20")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "fetchmail / fetchmailconf");
  }
}

#%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-171. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(15008);
  script_version("1.18");
  script_cvs_date("Date: 2019/08/02 13:32:17");

  script_cve_id("CVE-2002-1174", "CVE-2002-1175");
  script_bugtraq_id(5825, 5826, 5827);
  script_xref(name:"DSA", value:"171");

  script_name(english:"Debian DSA-171-1 : fetchmail - buffer overflows");
  script_summary(english:"Checks dpkg output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Stefan Esser discovered several buffer overflows and a broken boundary
check within fetchmail. If fetchmail is running in multidrop mode
these flaws can be used by remote attackers to crash it or to execute
arbitrary code under the user id of the user running fetchmail.
Depending on the configuration this even allows a remote root
compromise.

These problems have been fixed in version 5.9.11-6.1 for both
fetchmail and fetchmail-ssl for the current stable distribution
(woody), in version 5.3.3-4.2 for fetchmail for the old stable
distribution (potato) and in version 6.1.0-1 for both fetchmail and
fetchmail-ssl for the unstable distribution (sid). There are no
fetchmail-ssl packages for the old stable distribution (potato) and
thus no updates."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://security.e-matters.de/advisories/032002.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2002/dsa-171"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade the fetchmail packages immediately."
  );
  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_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:fetchmail");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:fetchmail-ssl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:2.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2002/10/07");
  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:"fetchmail", reference:"5.3.3-4.2")) flag++;
if (deb_check(release:"2.2", prefix:"fetchmailconf", reference:"5.3.3-4.2")) flag++;
if (deb_check(release:"3.0", prefix:"fetchmail", reference:"5.9.11-6.1")) flag++;
if (deb_check(release:"3.0", prefix:"fetchmail-common", reference:"5.9.11-6.1")) flag++;
if (deb_check(release:"3.0", prefix:"fetchmail-ssl", reference:"5.9.11-6.1")) flag++;
if (deb_check(release:"3.0", prefix:"fetchmailconf", reference:"5.9.11-6.1")) 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");