Debian DSA-2659-1 : libapache-mod-security - XML external entity processing vulnerability

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-2659. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(65921);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2013-1915");
  script_bugtraq_id(58810);
  script_xref(name:"DSA", value:"2659");

  script_name(english:"Debian DSA-2659-1 : libapache-mod-security - XML external entity processing vulnerability");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Timur Yunusov and Alexey Osipov from Positive Technologies discovered
that the XML files parser of ModSecurity, an Apache module whose
purpose is to tighten the Web application security, is vulnerable to
XML external entities attacks. A specially crafted XML file provided
by a remote attacker, could lead to local file disclosure or excessive
resources (CPU, memory) consumption when processed.

This update introduces a SecXmlExternalEntity option which is 'Off'by
default. This will disable the ability of libxml2 to load external
entities."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=704625"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/libapache-mod-security"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2013/dsa-2659"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the libapache-mod-security packages.

For the stable distribution (squeeze), this problem has been fixed in
version 2.5.12-1+squeeze2."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libapache-mod-security");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/04/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/04/11");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"6.0", prefix:"libapache-mod-security", reference:"2.5.12-1+squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"mod-security-common", reference:"2.5.12-1+squeeze2")) flag++;

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