Vulnerabilities > CVE-2013-0850 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Ffmpeg

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN

Summary

The decode_slice_header function in libavcodec/h264.c in FFmpeg before 1.1 allows remote attackers to have an unspecified impact via crafted H.264 data, which triggers an out-of-bounds array access.

Vulnerable Configurations

Part Description Count
Application
Ffmpeg
110

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_DSA-2793.NASL
descriptionSeveral security issues have been corrected in multiple demuxers and decoders of the libav multimedia library. The CVE IDs mentioned above are just a small portion of the security issues fixed in this update. A full list of the changes is available at http://git.libav.org/?p=libav.git;a=blob;f=Changelog;hb=refs/tags/v0.8 .9
last seen2020-03-17
modified2013-11-11
plugin id70807
published2013-11-11
reporterThis script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/70807
titleDebian DSA-2793-1 : libav - several vulnerabilities
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 DSA-2793. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(70807);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2013-0844", "CVE-2013-0850", "CVE-2013-0853", "CVE-2013-0854", "CVE-2013-0857", "CVE-2013-0858", "CVE-2013-0866");
  script_bugtraq_id(57868, 63796);
  script_xref(name:"DSA", value:"2793");

  script_name(english:"Debian DSA-2793-1 : libav - several vulnerabilities");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several security issues have been corrected in multiple demuxers and
decoders of the libav multimedia library. The CVE IDs mentioned above
are just a small portion of the security issues fixed in this update.
A full list of the changes is available at
http://git.libav.org/?p=libav.git;a=blob;f=Changelog;hb=refs/tags/v0.8
.9"
  );
  # http://git.libav.org/?p=libav.git;a=blob;f=Changelog;hb=refs/tags/v0.8.9
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ba5a8b32"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/libav"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2013/dsa-2793"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the libav packages.

For the stable distribution (wheezy), these problems have been fixed
in version 0.8.9-1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/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:libav");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/11/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/11/11");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2020 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:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"ffmpeg-dbg", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"ffmpeg-doc", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-dbg", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-doc", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-extra-dbg", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libav-tools", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec-dev", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec-extra-53", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavcodec53", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice-dev", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice-extra-53", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavdevice53", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter-dev", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter-extra-2", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavfilter2", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat-dev", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat-extra-53", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavformat53", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil-dev", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil-extra-51", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libavutil51", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc-dev", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc-extra-52", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libpostproc52", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale-dev", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale-extra-2", reference:"0.8.9-1")) flag++;
if (deb_check(release:"7.0", prefix:"libswscale2", reference:"0.8.9-1")) 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");