FreeBSD Ports: isc-dhcp41-server

# SPDX-FileCopyrightText: 2011 E-Soft Inc.
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.68958");
  script_version("2023-07-26T05:05:09+0000");
  script_tag(name:"last_modification", value:"2023-07-26 05:05:09 +0000 (Wed, 26 Jul 2023)");
  script_tag(name:"creation_date", value:"2011-03-05 22:25:39 +0100 (Sat, 05 Mar 2011)");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_cve_id("CVE-2011-0413");
  script_name("FreeBSD Ports: isc-dhcp41-server");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2011 E-Soft Inc.");
  script_family("FreeBSD Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/freebsd", "ssh/login/freebsdrel");

  script_tag(name:"insight", value:"The following package is affected: isc-dhcp41-server

CVE-2011-0413
The DHCPv6 server in ISC DHCP 4.0.x and 4.1.x before 4.1.2-P1, 4.0-ESV
and 4.1-ESV before 4.1-ESV-R1, and 4.2.x before 4.2.1b1 allows remote
attackers to cause a denial of service (assertion failure and daemon
crash) by sending a message over IPv6 for a declined and abandoned
address.");

  script_tag(name:"solution", value:"Update your system with the appropriate patches or
  software upgrades.");

  script_xref(name:"URL", value:"http://www.isc.org/software/dhcp/advisories/cve-2011-0413");
  script_xref(name:"URL", value:"http://www.kb.cert.org/vuls/id/686084");
  script_xref(name:"URL", value:"http://www.vuxml.org/freebsd/dc9f8335-2b3b-11e0-a91b-00e0815b8da8.html");

  script_tag(name:"summary", value:"The remote host is missing an update to the system
  as announced in the referenced advisory.");

  script_tag(name:"qod_type", value:"package");
  script_tag(name:"solution_type", value:"VendorFix");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-bsd.inc");

vuln = FALSE;
txt = "";

bver = portver(pkg:"isc-dhcp41-server");
if(!isnull(bver) && revcomp(a:bver, b:"4.1.2,1")<=0) {
  txt += 'Package isc-dhcp41-server version ' + bver + ' is installed which is known to be vulnerable.\n';
  vuln = TRUE;
}

if(vuln) {
  security_message(data:txt);
} else if (__pkg_match) {
  exit(99);
}