Debian DLA-464-1 : 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-464-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(91049);
  script_version("2.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2014-9676");

  script_name(english:"Debian DLA-464-1 : 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:
"It was discovered that there was a use-after free vulnerability in
libav, a multimedia player, server, encoder and transcoder library.

The seg_write_packet function in libavformat/segment.c in ffmpeg 2.1.4
and earlier does not free the correct memory location, which allows
remote attackers to cause a denial of service ('invalid memory
handler') and possibly execute arbitrary code via a crafted video that
triggers a use after free.

For Debian 7 Wheezy, this issue has been fixed in libav version
6:0.8.17-2+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/2016/05/msg00015.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:M/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: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:"2016/05/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2021 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:"7.0", prefix:"ffmpeg", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"ffmpeg-dbg", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"ffmpeg-doc", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-dbg", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-doc", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-extra-dbg", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-tools", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec-dev", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec-extra-53", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec53", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice-dev", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice-extra-53", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice53", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter-dev", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter-extra-2", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter2", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat-dev", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat-extra-53", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat53", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil-dev", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil-extra-51", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil51", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc-dev", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc-extra-52", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc52", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale-dev", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale-extra-2", reference:"6:0.8.17-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale2", reference:"6:0.8.17-2+deb7u1")) 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");