Slackware 8.1 / 9.0 / current : inetd DoS patched (SSA:2003-251-01)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Slackware Security Advisory 2003-251-01. The text 
# itself is copyright (C) Slackware Linux, Inc.
#

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

if (description)
{
  script_id(18736);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_xref(name:"SSA", value:"2003-251-01");

  script_name(english:"Slackware 8.1 / 9.0 / current : inetd DoS patched (SSA:2003-251-01)");
  script_summary(english:"Checks for updated package in /var/log/packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Slackware host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Upgraded inetd packages are available for Slackware 8.1, 9.0 and -
-current. These fix a previously hard-coded limit of 256
connections-per-minute, after which the given service is disabled for
ten minutes. An attacker could use a quick burst of connections every
ten minutes to effectively disable a service. Once upon a time, this
was an intentional feature of inetd, but in today's world it has
become a bug. Even having inetd look at the source IP and try to limit
only the source of the attack would be problematic since TCP source
addresses are so easily faked. So, the approach we have taken
(borrowed from FreeBSD) is to disable this rate limiting 'feature' by
default. It can be reenabled by providing a -R <rate> option on the
command-line if desired, but for obvious reasons we do not recommend
this. Any site running services through inetd that they would like
protected from this simple DoS attack should upgrade to the new inetd
package immediately."
  );
  # http://www.slackware.com/security/viewer.php?l=slackware-security&y=2003&m=slackware-security.418022
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b095c6ea"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected inetd package.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:slackware:slackware_linux:inetd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:8.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:9.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2003/09/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/07/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2021 Tenable Network Security, Inc.");
  script_family(english:"Slackware Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Slackware/release", "Host/Slackware/packages");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("slackware.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Slackware/release")) audit(AUDIT_OS_NOT, "Slackware");
if (!get_kb_item("Host/Slackware/packages")) 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, "Slackware", cpu);


flag = 0;
if (slackware_check(osver:"8.1", pkgname:"inetd", pkgver:"1.79s", pkgarch:"i386", pkgnum:"2")) flag++;

if (slackware_check(osver:"9.0", pkgname:"inetd", pkgver:"1.79s", pkgarch:"i386", pkgnum:"2")) flag++;

if (slackware_check(osver:"current", pkgname:"inetd", pkgver:"1.79s", pkgarch:"i486", pkgnum:"2")) flag++;


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