Debian LTS: Security Advisory for libav (DLA-2021-1)

# Copyright (C) 2019 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) the respective author(s)
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.892021");
  script_version("2020-01-29T08:22:52+0000");
  script_cve_id("CVE-2017-17127", "CVE-2017-18245", "CVE-2018-19128", "CVE-2018-19130", "CVE-2019-14443", "CVE-2019-17542");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2020-01-29 08:22:52 +0000 (Wed, 29 Jan 2020)");
  script_tag(name:"creation_date", value:"2019-12-06 03:00:15 +0000 (Fri, 06 Dec 2019)");
  script_name("Debian LTS: Security Advisory for libav (DLA-2021-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("Debian Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB8");

  script_xref(name:"URL", value:"https://lists.debian.org/debian-lts-announce/2019/12/msg00003.html");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DLA-2021-1");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'libav'
  package(s) announced via the DLA-2021-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"Several security issues were fixed in libav, a multimedia library for
processing audio and video files.

CVE-2017-17127

The vc1_decode_frame function in libavcodec/vc1dec.c allows remote
attackers to cause a denial of service (NULL pointer dereference
and application crash) via a crafted file.
CVE-2018-19130 is a duplicate of this vulnerability.

CVE-2017-18245

The mpc8_probe function in libavformat/mpc8.c allows remote
attackers to cause a denial of service (heap-based buffer
over-read) via a crafted audio file on 32-bit systems.

CVE-2018-19128

Heap-based buffer over-read in decode_frame in libavcodec/lcldec.c
allows an attacker to cause denial-of-service via a crafted avi
file.

CVE-2019-14443

Division by zero in range_decode_culshift in libavcodec/apedec.c
allows remote attackers to cause a denial of service (application
crash), as demonstrated by avconv.

CVE-2019-17542

Heap-based buffer overflow in vqa_decode_chunk because of an
out-of-array access in vqa_decode_init in libavcodec/vqavideo.c.");

  script_tag(name:"affected", value:"'libav' package(s) on Debian Linux.");

  script_tag(name:"solution", value:"For Debian 8 'Jessie', these problems have been fixed in version
6:11.12-1~deb8u9.

We recommend that you upgrade your libav packages.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

res = "";
report = "";
if(!isnull(res = isdpkgvuln(pkg:"libav-dbg", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libav-doc", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libav-tools", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavcodec-dev", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavcodec-extra", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavcodec-extra-56", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavcodec56", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavdevice-dev", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavdevice55", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavfilter-dev", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavfilter5", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavformat-dev", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavformat56", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavresample-dev", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavresample2", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavutil-dev", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libavutil54", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libswscale-dev", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libswscale3", ver:"6:11.12-1~deb8u9", rls:"DEB8"))) {
  report += res;
}

if(report != "") {
  security_message(data:report);
} else if(__pkg_match) {
  exit(99);
}

exit(0);