Vulnerabilities > CVE-2017-15922 - Out-of-bounds Read vulnerability in GNU Libextractor 1.4

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
gnu
CWE-125
nessus

Summary

In GNU Libextractor 1.4, there is an out-of-bounds read in the EXTRACTOR_dvi_extract_method function in plugins/dvi_extractor.c.

Vulnerable Configurations

Part Description Count
Application
Gnu
1

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-1198.NASL
descriptionLeon Zhao discovered several security vulnerabilities in libextractor, a universal library and command-line tool to obtain meta-data about files. NULL pointer Dereferences, heap-based buffer overflows, integer signedness errors and out-of-bounds read may lead to a denial of service (application crash) or have other unspecified impact. For Debian 7
last seen2020-03-17
modified2017-12-05
plugin id105009
published2017-12-05
reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/105009
titleDebian DLA-1198-1 : libextractor 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-1198-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(105009);
  script_version("3.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2017-15266", "CVE-2017-15267", "CVE-2017-15600", "CVE-2017-15601", "CVE-2017-15602", "CVE-2017-15922");

  script_name(english:"Debian DLA-1198-1 : libextractor 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:
"Leon Zhao discovered several security vulnerabilities in libextractor,
a universal library and command-line tool to obtain meta-data about
files. NULL pointer Dereferences, heap-based buffer overflows, integer
signedness errors and out-of-bounds read may lead to a
denial of service (application crash) or have other unspecified
impact.

For Debian 7 'Wheezy', these problems have been fixed in version
1:0.6.3-5+deb7u1.

We recommend that you upgrade your libextractor 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/2017/12/msg00000.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/libextractor"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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: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:extract");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libextractor-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libextractor-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libextractor-plugins");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libextractor3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/05");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2020 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:"extract", reference:"1:0.6.3-5+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libextractor-dbg", reference:"1:0.6.3-5+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libextractor-dev", reference:"1:0.6.3-5+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libextractor-plugins", reference:"1:0.6.3-5+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libextractor3", reference:"1:0.6.3-5+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");