Debian DSA-3582-1 : expat - security update

#%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-3582. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(91200);
  script_version("2.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2016-0718", "CVE-2016-4472");
  script_xref(name:"DSA", value:"3582");

  script_name(english:"Debian DSA-3582-1 : expat - security update");
  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:
"Gustavo Grieco discovered that Expat, an XML parsing C library, does
not properly handle certain kinds of malformed input documents,
resulting in buffer overflows during processing and error reporting. A
remote attacker can take advantage of this flaw to cause an
application using the Expat library to crash, or potentially, to
execute arbitrary code with the privileges of the user running the
application."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2015-1283"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/expat"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2016/dsa-3582"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the expat packages.

For the stable distribution (jessie), this problem has been fixed in
version 2.1.0-6+deb8u2. Additionally this update refreshes the fix for
CVE-2015-1283 to avoid relying on undefined behavior."
  );
  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_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:expat");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2021 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:"8.0", prefix:"expat", reference:"2.1.0-6+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"lib64expat1", reference:"2.1.0-6+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"lib64expat1-dev", reference:"2.1.0-6+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"libexpat1", reference:"2.1.0-6+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"libexpat1-dev", reference:"2.1.0-6+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"libexpat1-udeb", reference:"2.1.0-6+deb8u2")) 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");