Vulnerabilities > CVE-2018-19130 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Libav 12.3

047910
CVSS 6.5 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
libav
CWE-119
nessus
NVD
Published: 2018-11-09
Updated: 2024-11-21

Summary

In Libav 12.3, there is an invalid memory access in vc1_decode_frame in libavcodec/vc1dec.c that allows attackers to cause a denial-of-service via a crafted aac file. NOTE: This may be a duplicate of CVE-2017-17127

Vulnerable Configurations

Part Description Count
Application
Libav
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

NASL familyDebian Local Security Checks
NASL idDEBIAN_DLA-2021.NASL
descriptionSeveral 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. For Debian 8
last seen2020-06-01
modified2020-06-02
plugin id131740
published2019-12-06
reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/131740
titleDebian DLA-2021-1 : libav security update
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2021-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(131740);
  script_version("1.2");
  script_cvs_date("Date: 2019/12/12");

  script_cve_id("CVE-2017-17127", "CVE-2017-18245", "CVE-2018-19128", "CVE-2018-19130", "CVE-2019-14443", "CVE-2019-17542");

  script_name(english:"Debian DLA-2021-1 : 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:
"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.

For Debian 8 'Jessie', these problems have been fixed in version
6:11.12-1~deb8u9.

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/2019/12/msg00003.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/libav"
  );
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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-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-extra-56");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec56");
  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:libavdevice55");
  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:libavfilter5");
  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:libavformat56");
  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:libavresample2");
  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:libavutil54");
  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:libswscale3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/06");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 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:"8.0", prefix:"libav-dbg", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libav-doc", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libav-tools", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavcodec-dev", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavcodec-extra", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavcodec-extra-56", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavcodec56", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavdevice-dev", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavdevice55", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavfilter-dev", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavfilter5", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavformat-dev", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavformat56", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavresample-dev", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavresample2", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavutil-dev", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libavutil54", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libswscale-dev", reference:"6:11.12-1~deb8u9")) flag++;
if (deb_check(release:"8.0", prefix:"libswscale3", reference:"6:11.12-1~deb8u9")) 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");

References