Debian: Security Advisory (DLA-2818-1)

# SPDX-FileCopyrightText: 2021 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.892818");
  script_cve_id("CVE-2020-20445", "CVE-2020-20446", "CVE-2020-20451", "CVE-2020-20453", "CVE-2020-22037", "CVE-2020-22041", "CVE-2020-22044", "CVE-2020-22046", "CVE-2020-22048", "CVE-2020-22049", "CVE-2020-22054", "CVE-2021-38171", "CVE-2021-38291");
  script_tag(name:"creation_date", value:"2021-11-18 02:00:20 +0000 (Thu, 18 Nov 2021)");
  script_version("2024-02-02T05:06:07+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +0000 (Fri, 02 Feb 2024)");
  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:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-08-30 15:37:42 +0000 (Mon, 30 Aug 2021)");

  script_name("Debian: Security Advisory (DLA-2818-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  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=DEB9");

  script_xref(name:"Advisory-ID", value:"DLA-2818-1");
  script_xref(name:"URL", value:"https://www.debian.org/lts/security/2021/DLA-2818-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/ffmpeg");
  script_xref(name:"URL", value:"https://wiki.debian.org/LTS");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'ffmpeg' package(s) announced via the DLA-2818-1 advisory.");

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

  script_tag(name:"insight", value:"Multiple issues have been discovered in ffmpeg - tools for transcoding, streaming and playing of multimedia files.

CVE-2020-20445

Divide By Zero issue via libavcodec/lpc.h, which allows a remote malicious user to cause a Denial of Service.

CVE-2020-20446

Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.

CVE-2020-20451

Denial of Service issue due to resource management errors via fftools/cmdutils.c.

CVE-2020-20453

Divide By Zero issue via libavcodec/aaccoder, which allows a remote malicious user to cause a Denial of Service.

CVE-2020-22037

A Denial of Service vulnerability due to a memory leak in avcodec_alloc_context3 at options.c

CVE-2020-22041

A Denial of Service vulnerability due to a memory leak in the av_buffersrc_add_frame_flags function in buffersrc.

CVE-2020-22044

A Denial of Service vulnerability due to a memory leak in the url_open_dyn_buf_internal function in libavformat/aviobuf.c.

CVE-2020-22046

A Denial of Service vulnerability due to a memory leak in the avpriv_float_dsp_allocl function in libavutil/float_dsp.c.

CVE-2020-22048

A Denial of Service vulnerability due to a memory leak in the ff_frame_pool_get function in framepool.c.

CVE-2020-22049

A Denial of Service vulnerability due to a memory leak in the wtvfile_open_sector function in wtvdec.c.

CVE-2020-22054

A Denial of Service vulnerability due to a memory leak in the av_dict_set function in dict.c.

CVE-2021-38171

adts_decode_extradata in libavformat/adtsenc.c does not check the init_get_bits return value, which is a necessary step because the second argument to init_get_bits can be crafted.

CVE-2021-38291

Assertion failure at src/libavutil/mathematics.c, causing ffmpeg aborted is detected. In some extreme cases, like with adpcm_ms samples with an extremely high channel count, get_audio_frame_duration() may return a negative frame duration value.

For Debian 9 stretch, these problems have been fixed in version 7:3.2.16-1+deb9u1.

We recommend that you upgrade your ffmpeg packages.

For the detailed security status of ffmpeg please refer to its security tracker page at: [link moved to references]

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");

  script_tag(name:"affected", value:"'ffmpeg' package(s) on Debian 9.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  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");

release = dpkg_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"ffmpeg", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"ffmpeg-doc", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libav-tools", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavcodec-dev", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavcodec-extra", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavcodec-extra57", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavcodec57", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavdevice-dev", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavdevice57", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavfilter-dev", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavfilter-extra", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavfilter-extra6", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavfilter6", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavformat-dev", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavformat57", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavresample-dev", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavresample3", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavutil-dev", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavutil55", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libpostproc-dev", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libpostproc54", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libswresample-dev", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libswresample2", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libswscale-dev", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libswscale4", ver:"7:3.2.16-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);