FreeBSD Ports: ejabberd

# 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("1.3.6.1.4.1.25623.1.0.69997");
  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:"2011-08-03 04:36:20 +0200 (Wed, 03 Aug 2011)");
  script_cve_id("CVE-2011-1753");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_name("FreeBSD Ports: ejabberd");
  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: ejabberd

CVE-2011-1753
expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and
exmpp before 0.9.7, does not properly detect recursion during entity
expansion, which allows remote attackers to cause a denial of service
(memory and CPU consumption) via a crafted XML document containing a
large number of nested entity references, a similar issue to
CVE-2003-1564.");

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

  script_xref(name:"URL", value:"http://www.ejabberd.im/ejabberd-2.1.7");
  script_xref(name:"URL", value:"http://www.vuxml.org/freebsd/01d3ab7d-9c43-11e0-bc0f-0014a5e3cda6.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:"ejabberd");
if(!isnull(bver) && revcomp(a:bver, b:"2.1.7")<0) {
  txt += 'Package ejabberd 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);
}