Vulnerabilities > CVE-2020-11759 - Integer Overflow or Wraparound vulnerability in multiple products

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
openexr
fedoraproject
canonical
debian
apple
CWE-190
nessus
NVD
Published: 2020-04-14
Updated: 2023-11-07

Summary

An issue was discovered in OpenEXR before 2.4.1. Because of integer overflows in CompositeDeepScanLine::Data::handleDeepFrameBuffer and readSampleCountForLineBlock, an attacker can write to an out-of-bounds pointer.

Vulnerable Configurations

Part Description Count
Application
Openexr
34
Application
Apple
50
OS
Fedoraproject
1
OS
Canonical
4
OS
Debian
2
OS
Apple
405

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Forced Integer Overflow
    This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

Nessus

NASL familyUbuntu Local Security Checks
NASL idUBUNTU_USN-4339-1.NASL
descriptionBrandon Perry discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 20.04 LTS. (CVE-2017-9111, CVE-2017-9113, CVE-2017-9115) Tan Jie discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 20.04 LTS. (CVE-2018-18444) Samuel Gross discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code. (CVE-2020-11758, CVE-2020-11759, CVE-2020-11760, CVE-2020-11761, CVE-2020-11762, CVE-2020-11763, CVE-2020-11764) It was discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service. (CVE-2020-11765). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen2020-05-03
modified2020-04-28
plugin id136028
published2020-04-28
reporterUbuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/136028
titleUbuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : openexr vulnerabilities (USN-4339-1)
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4339-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(136028);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/30");

  script_cve_id("CVE-2017-9111", "CVE-2017-9113", "CVE-2017-9115", "CVE-2018-18444", "CVE-2020-11758", "CVE-2020-11759", "CVE-2020-11760", "CVE-2020-11761", "CVE-2020-11762", "CVE-2020-11763", "CVE-2020-11764", "CVE-2020-11765");
  script_xref(name:"USN", value:"4339-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : openexr vulnerabilities (USN-4339-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Brandon Perry discovered that OpenEXR incorrectly handled certain
malformed EXR image files. If a user were tricked into opening a
crafted EXR image file, a remote attacker could cause a denial of
service, or possibly execute arbitrary code. This issue only applied
to Ubuntu 20.04 LTS. (CVE-2017-9111, CVE-2017-9113, CVE-2017-9115)

Tan Jie discovered that OpenEXR incorrectly handled certain malformed
EXR image files. If a user were tricked into opening a crafted EXR
image file, a remote attacker could cause a denial of service, or
possibly execute arbitrary code. This issue only applied to Ubuntu
20.04 LTS. (CVE-2018-18444)

Samuel Gross discovered that OpenEXR incorrectly handled certain
malformed EXR image files. If a user were tricked into opening a
crafted EXR image file, a remote attacker could cause a denial of
service, or possibly execute arbitrary code. (CVE-2020-11758,
CVE-2020-11759, CVE-2020-11760, CVE-2020-11761, CVE-2020-11762,
CVE-2020-11763, CVE-2020-11764)

It was discovered that OpenEXR incorrectly handled certain malformed
EXR image files. If a user were tricked into opening a crafted EXR
image file, a remote attacker could cause a denial of service.
(CVE-2020-11765).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://usn.ubuntu.com/4339-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update 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: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:canonical:ubuntu_linux:libopenexr22");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenexr23");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenexr24");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openexr");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/05/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(16\.04|18\.04|19\.10|20\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 19.10 / 20.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"16.04", pkgname:"libopenexr22", pkgver:"2.2.0-10ubuntu2.2")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"openexr", pkgver:"2.2.0-10ubuntu2.2")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"libopenexr22", pkgver:"2.2.0-11.1ubuntu1.2")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"openexr", pkgver:"2.2.0-11.1ubuntu1.2")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"libopenexr23", pkgver:"2.2.1-4.1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"openexr", pkgver:"2.2.1-4.1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"20.04", pkgname:"libopenexr24", pkgver:"2.3.0-6ubuntu0.1")) flag++;
if (ubuntu_check(osver:"20.04", pkgname:"openexr", pkgver:"2.3.0-6ubuntu0.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libopenexr22 / libopenexr23 / libopenexr24 / openexr");
}

References