Debian DLA-2537-1 : ffmpeg security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2537-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(145724);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/25");

  script_cve_id("CVE-2019-17539", "CVE-2020-35965");

  script_name(english:"Debian DLA-2537-1 : ffmpeg security update");

  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 ffmpeg, a widely used
multimedia framework.

CVE-2019-17539

a NULL pointer dereference and possibly unspecified other impact when
there is no valid close function pointer

CVE-2020-35965

an out-of-bounds write because of errors in calculations of when to
perform memset zero operations

For Debian 9 stretch, these problems have been fixed in version
7:3.2.15-0+deb9u2.

We recommend that you upgrade your ffmpeg packages.

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

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/2021/01/msg00026.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/ffmpeg");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/ffmpeg");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-17539");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/01/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/02/01");

  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-doc");
  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");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec-extra57");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec57");
  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:libavdevice57");
  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");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter-extra6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter6");
  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:libavformat57");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavresample-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavresample3");
  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:libavutil55");
  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:libpostproc54");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswresample-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswresample2");
  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:libswscale4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"ffmpeg", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"ffmpeg-doc", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libav-tools", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavcodec-dev", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavcodec-extra", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavcodec-extra57", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavcodec57", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavdevice-dev", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavdevice57", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavfilter-dev", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavfilter-extra", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavfilter-extra6", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavfilter6", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavformat-dev", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavformat57", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavresample-dev", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavresample3", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavutil-dev", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libavutil55", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libpostproc-dev", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libpostproc54", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libswresample-dev", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libswresample2", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libswscale-dev", reference:"7:3.2.15-0+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libswscale4", reference:"7:3.2.15-0+deb9u2")) 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");