GLSA-200409-32 : getmail: Filesystem overwrite vulnerability

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200409-32.
#
# The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(14809);
  script_version("1.16");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2004-0880", "CVE-2004-0881");
  script_xref(name:"GLSA", value:"200409-32");

  script_name(english:"GLSA-200409-32 : getmail: Filesystem overwrite vulnerability");
  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-200409-32
(getmail: Filesystem overwrite vulnerability)

    David Watson discovered a vulnerability in getmail when it is
    configured to run as root and deliver mail to the maildirs/mbox files
    of untrusted local users. A malicious local user can then exploit a
    race condition, or a similar symlink attack, and potentially cause
    getmail to create or overwrite files in any directory on the system.
  
Impact :

    An untrusted local user could potentially create or overwrite files in
    any directory on the system. This vulnerability may also be exploited
    to have arbitrary commands executed as root.
  
Workaround :

    Do not run getmail as a privileged user; or, in version 4, use an
    external MDA with explicitly configured user and group privileges."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.qcc.ca/~charlesc/software/getmail-4/CHANGELOG"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://article.gmane.org/gmane.mail.getmail.user/1430"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200409-32"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All getmail users should upgrade to the latest version:
    # emerge sync
    # emerge -pv '>=net-mail/getmail-4.2.0'
    # emerge '>=net-mail/getmail-4.2.0'"
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:getmail");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2004/09/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/24");
  script_set_attribute(attribute:"vuln_publication_date", value:"2004/09/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2021 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:"net-mail/getmail", unaffected:make_list("ge 4.2.0"), vulnerable:make_list("lt 4.2.0"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:qpkg_report_get());
  else security_note(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "getmail");
}