Debian DLA-1142-1 : libav 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-1142-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(104056);
  script_version("3.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2015-8365", "CVE-2017-7208", "CVE-2017-7862", "CVE-2017-9992");

  script_name(english:"Debian DLA-1142-1 : libav 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:
"Multiple vulnerabilities have been found in libav :

CVE-2015-8365

The smka_decode_frame function in libavcodec/smacker.c does not verify
that the data size is consistent with the number of channels, which
allows remote attackers to cause a denial of service (out-of-bounds
array access) or possibly have unspecified other impact via crafted
Smacker data.

CVE-2017-7208

The decode_residual function in libavcodec allows remote attackers to
cause a denial of service (buffer over-read) or obtain sensitive
information from process memory via a crafted h264 video file.

CVE-2017-7862

The decode_frame function in libavcodec/pictordec.c is vulnerable to
an out-of-bounds write caused by a heap-based buffer overflow.

CVE-2017-9992

The decode_dds1 function in libavcodec/dfa.c allows remote attackers
to cause a denial of service (Heap-based buffer overflow and
application crash) or possibly have unspecified other impact via a
crafted file.

For Debian 7 'Wheezy', these problems have been fixed in version
6:0.8.21-0+deb7u1.

We recommend that you upgrade your libav packages.

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/2017/10/msg00021.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/libav"
  );
  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_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:ffmpeg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ffmpeg-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ffmpeg-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libav-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libav-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libav-extra-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libav-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec-extra-53");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec53");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavdevice-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavdevice-extra-53");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavdevice53");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter-extra-2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavformat-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavformat-extra-53");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavformat53");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavutil-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavutil-extra-51");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavutil51");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpostproc-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpostproc-extra-52");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpostproc52");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswscale-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswscale-extra-2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswscale2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/10/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2021 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:"7.0", prefix:"ffmpeg", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"ffmpeg-dbg", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"ffmpeg-doc", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-dbg", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-doc", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-extra-dbg", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-tools", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec-dev", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec-extra-53", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec53", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice-dev", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice-extra-53", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice53", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter-dev", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter-extra-2", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter2", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat-dev", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat-extra-53", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat53", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil-dev", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil-extra-51", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil51", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc-dev", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc-extra-52", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc52", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale-dev", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale-extra-2", reference:"6:0.8.21-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale2", reference:"6:0.8.21-0+deb7u1")) 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");