Debian DLA-277-1 : 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-277-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(84835);
  script_version("2.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2015-2059");
  script_bugtraq_id(72736);

  script_name(english:"Debian DLA-277-1 : 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:
"Thijs Alkemade discovered that the Jabber server may pass an invalid
UTF-8 string to libidn, the GNU library for Internationalized Domain
Names (IDNs). In the case of the Jabber server, this results in
information disclosure, and it is likely that some other applications
using libidn have similar vulnerabilities. This update changes libidn
to check for invalid strings rather than assuming that the application
has done so.

For the oldoldstable distribution (squeeze), this problem has been
fixed in version 1.15-2+deb6u1.

For the oldstable distribution (wheezy) and stable distribution
(jessie), this problem will be fixed soon.

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/2015/07/msg00015.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_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: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:"2015/07/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/07/20");
  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+deb6u1")) flag++;
if (deb_check(release:"6.0", prefix:"libidn11", reference:"1.15-2+deb6u1")) flag++;
if (deb_check(release:"6.0", prefix:"libidn11-dev", reference:"1.15-2+deb6u1")) flag++;
if (deb_check(release:"6.0", prefix:"libidn11-java", reference:"1.15-2+deb6u1")) 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");