Vulnerabilities > CVE-2016-7393 - Out-of-bounds Read vulnerability in Libav

047910
CVSS 5.5 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
local
low complexity
libav
CWE-125
nessus
NVD
Published: 2017-02-15
Updated: 2023-11-07

Summary

Stack-based buffer overflow in the aac_sync function in aac_parser.c in Libav before 11.5 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted file.

Vulnerable Configurations

Part Description Count
Application
Libav
110

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Overread Buffers
    An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Nessus

NASL familyDebian Local Security Checks
NASL idDEBIAN_DLA-644.NASL
descriptionMultiple vulnerabilities have been found in libav : CVE-2015-1872 The ff_mjpeg_decode_sof function in libavcodec/mjpegdec.c in Libav before 0.8.18 does not validate the number of components in a JPEG-LS Start Of Frame segment, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted Motion JPEG data. CVE-2015-5479 The ff_h263_decode_mba function in libavcodec/ituh263dec.c in Libav before 11.5 allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a file with crafted dimensions. CVE-2016-7393 The aac_sync function in libavcodec/aac_parser.c in Libav before 11.5 is vulnerable to a stack-based buffer overflow. For Debian 7
last seen2020-03-17
modified2016-10-05
plugin id93847
published2016-10-05
reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/93847
titleDebian DLA-644-1 : libav security update
code
#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-644-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(93847);
  script_version("2.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2015-1872", "CVE-2015-5479", "CVE-2016-7393");
  script_bugtraq_id(72644, 75932);

  script_name(english:"Debian DLA-644-1 : 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:
"Multiple vulnerabilities have been found in libav :

CVE-2015-1872

The ff_mjpeg_decode_sof function in libavcodec/mjpegdec.c in Libav
before 0.8.18 does not validate the number of components in a JPEG-LS
Start Of Frame segment, which allows remote attackers to cause a
denial of service (out-of-bounds array access) or possibly have
unspecified other impact via crafted Motion JPEG data.

CVE-2015-5479

The ff_h263_decode_mba function in libavcodec/ituh263dec.c in Libav
before 11.5 allows remote attackers to cause a denial of service
(divide-by-zero error and application crash) via a file with crafted
dimensions.

CVE-2016-7393

The aac_sync function in libavcodec/aac_parser.c in Libav before 11.5
is vulnerable to a stack-based buffer overflow.

For Debian 7 'Wheezy', these problems have been fixed in version
6:0.8.18-0+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/2016/10/msg00000.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_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:"2016/10/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/10/05");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"ffmpeg-dbg", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"ffmpeg-doc", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-dbg", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-doc", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-extra-dbg", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-tools", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec-dev", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec-extra-53", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec53", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice-dev", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice-extra-53", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice53", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter-dev", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter-extra-2", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter2", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat-dev", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat-extra-53", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat53", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil-dev", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil-extra-51", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil51", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc-dev", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc-extra-52", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc52", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale-dev", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale-extra-2", reference:"6:0.8.18-0+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale2", reference:"6:0.8.18-0+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");

References