GLSA-200411-07 : Proxytunnel: Format string 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 200411-07.
#
# 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(15612);
  script_version("1.19");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2004-0992");
  script_xref(name:"GLSA", value:"200411-07");

  script_name(english:"GLSA-200411-07 : Proxytunnel: Format string 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-200411-07
(Proxytunnel: Format string vulnerability)

    Florian Schilhabel of the Gentoo Linux Security Audit project found a
    format string vulnerability in Proxytunnel. When the program is started in
    daemon mode (-a [port]), it improperly logs invalid proxy answers to
    syslog.
  
Impact :

    A malicious remote server could send specially crafted invalid answers to
    exploit the format string vulnerability, potentially allowing the execution
    of arbitrary code on the tunnelling host with the rights of the Proxytunnel
    process.
  
Workaround :

    You can mitigate the issue by only allowing connections to trusted remote
    servers."
  );
  # http://proxytunnel.sourceforge.net/news.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?8f59573d"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200411-07"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Proxytunnel users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=net-misc/proxytunnel-1.2.3'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/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:gentoo:linux:proxytunnel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2004/11/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/11/03");
  script_set_attribute(attribute:"vuln_publication_date", value:"2004/10/29");
  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-misc/proxytunnel", unaffected:make_list("ge 1.2.3"), vulnerable:make_list("lt 1.2.3"))) flag++;

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