Debian DLA-291-1 : libidn 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 DLA-291-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(85418);
  script_version("2.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_name(english:"Debian DLA-291-1 : libidn security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Adam Sampson found a vulnerability in GNU Libidn, library that
implements the IETF IDN specifications. Libdin incorrectly handled
invalid UTF-8 input, causing it to bad free(). This issue was
introduced by the fix for CVE-2015-2059.

For Debian 6 'Squeeze', this issue has been fixed in the
1.15-2+deb6u2 version of libidn.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2015/08/msg00005.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze-lts/libidn"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  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:debian:debian_linux:idn");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libidn11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libidn11-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libidn11-java");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/08/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/08/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2021 Tenable Network Security, Inc.");
  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:"idn", reference:"1.15-2+deb6u2")) flag++;
if (deb_check(release:"6.0", prefix:"libidn11", reference:"1.15-2+deb6u2")) flag++;
if (deb_check(release:"6.0", prefix:"libidn11-dev", reference:"1.15-2+deb6u2")) flag++;
if (deb_check(release:"6.0", prefix:"libidn11-java", reference:"1.15-2+deb6u2")) 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");