Debian: Security Advisory (DLA-1611-2)

# SPDX-FileCopyrightText: 2018 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("1.3.6.1.4.1.25623.1.0.891611");
  script_cve_id("CVE-2014-9317", "CVE-2015-6761", "CVE-2015-6818", "CVE-2015-6820", "CVE-2015-6821", "CVE-2015-6822", "CVE-2015-6823", "CVE-2015-6824", "CVE-2015-6825", "CVE-2015-6826", "CVE-2015-8216", "CVE-2015-8217", "CVE-2015-8363", "CVE-2015-8364", "CVE-2015-8661", "CVE-2015-8662", "CVE-2015-8663", "CVE-2016-10190", "CVE-2016-10191");
  script_tag(name:"creation_date", value:"2018-12-20 23:00:00 +0000 (Thu, 20 Dec 2018)");
  script_version("2024-02-02T05:06:06+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:06 +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:3.0/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:"2017-02-24 20:20:04 +0000 (Fri, 24 Feb 2017)");

  script_name("Debian: Security Advisory (DLA-1611-2)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 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=DEB8");

  script_xref(name:"Advisory-ID", value:"DLA-1611-2");
  script_xref(name:"URL", value:"https://www.debian.org/lts/security/2018/DLA-1611-2");
  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 'libav' package(s) announced via the DLA-1611-2 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 have been corrected in multiple demuxers and decoders of the libav multimedia library.

CVE-2014-9317

The decode_ihdr_chunk function in libavcodec/pngdec.c allowed remote attackers to cause a denial of service (out-of-bounds heap access) and possibly had other unspecified impact via an IDAT before an IHDR in a PNG file. The issue got addressed by checking IHDR/IDAT order.

CVE-2015-6761

The update_dimensions function in libavcodec/vp8.c in libav relies on a coefficient-partition count during multi-threaded operation, which allowed remote attackers to cause a denial of service (race condition and memory corruption) or possibly have unspecified other impact via a crafted WebM file. This issue has been resolved by using num_coeff_partitions in thread/buffer setup. The variable is not a constant and can lead to race conditions.

CVE-2015-6818

The decode_ihdr_chunk function in libavcodec/pngdec.c did not enforce uniqueness of the IHDR (aka image header) chunk in a PNG image, which allowed remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via a crafted image with two or more of these chunks. This has now been fixed by only allowing one IHDR chunk. Multiple IHDR chunks are forbidden in PNG.

CVE-2015-6820

The ff_sbr_apply function in libavcodec/aacsbr.c did not check for a matching AAC frame syntax element before proceeding with Spectral Band Replication calculations, which allowed remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted AAC data. This has now been fixed by checking that the element type matches before applying SBR.

CVE-2015-6821

The ff_mpv_common_init function in libavcodec/mpegvideo.c did not properly maintain the encoding context, which allowed remote attackers to cause a denial of service (invalid pointer access) or possibly have unspecified other impact via crafted MPEG data. The issue has been resolved by clearing pointers in ff_mpv_common_init(). This ensures that no stale pointers leak through on any path.

CVE-2015-6822

The destroy_buffers function in libavcodec/sanm.c did not properly maintain height and width values in the video context, which allowed remote attackers to cause a denial of service (segmentation violation and application crash) or possibly have unspecified other impact via crafted LucasArts Smush video data. The solution to this was to reset sizes in destroy_buffers() in avcodec/sanm.c.

CVE-2015-6823

Other than stated in the debian/changelog file, this issue has not yet been fixed for libav in Debian jessie LTS.

CVE-2015-6824

Other than stated in the debian/changelog file, this issue has not yet been fixed for libav in Debian jessie LTS.

CVE-2015-6825

The ff_frame_thread_init function in libavcodec/pthread_frame.c mishandled certain memory-allocation failures, ... [Please see the references for more information on the vulnerabilities]");

  script_tag(name:"affected", value:"'libav' package(s) on Debian 8.");

  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 == "DEB8") {

  if(!isnull(res = isdpkgvuln(pkg:"libav-dbg", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libav-doc", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libav-tools", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavcodec-dev", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavcodec-extra", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavcodec-extra-56", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavcodec56", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavdevice-dev", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavdevice55", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavfilter-dev", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavfilter5", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavformat-dev", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavformat56", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavresample-dev", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavresample2", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavutil-dev", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libavutil54", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libswscale-dev", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libswscale3", ver:"6:11.12-1~deb8u3", rls:"DEB8"))) {
    report += res;
  }

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

exit(0);