Debian DLA-2694-1 : tiff security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2694-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(151028);
  script_version("1.22");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/18");

  script_cve_id("CVE-2020-35523", "CVE-2020-35524");

  script_name(english:"Debian DLA-2694-1 : tiff 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:
"Two vulnerabilities have been discovered in the libtiff library and
the included tools, which may result in denial of service or the
execution of arbitrary code if malformed image files are processed.

For Debian 9 stretch, these problems have been fixed in version
4.0.8-2+deb9u6.

We recommend that you upgrade your tiff packages.

For the detailed security status of tiff please refer to its security
tracker page at: https://security-tracker.debian.org/tracker/tiff

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/2021/06/msg00023.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/tiff"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/tiff"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/AC:L/PR:N/UI:R/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:"cvss_score_source", value:"CVE-2020-35524");
  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:libtiff-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtiff-opengl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtiff-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtiff5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtiff5-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtiffxx5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/03/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/06/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2021-2023 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:"9.0", prefix:"libtiff-doc", reference:"4.0.8-2+deb9u6")) flag++;
if (deb_check(release:"9.0", prefix:"libtiff-opengl", reference:"4.0.8-2+deb9u6")) flag++;
if (deb_check(release:"9.0", prefix:"libtiff-tools", reference:"4.0.8-2+deb9u6")) flag++;
if (deb_check(release:"9.0", prefix:"libtiff5", reference:"4.0.8-2+deb9u6")) flag++;
if (deb_check(release:"9.0", prefix:"libtiff5-dev", reference:"4.0.8-2+deb9u6")) flag++;
if (deb_check(release:"9.0", prefix:"libtiffxx5", reference:"4.0.8-2+deb9u6")) flag++;

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