Vulnerabilities > CVE-2014-2897 - Out-of-bounds Read vulnerability in Wolfssl

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
wolfssl
CWE-125
critical
nessus
NVD
Published: 2020-01-28
Updated: 2020-02-04

Summary

The SSL 3 HMAC functionality in wolfSSL CyaSSL 2.5.0 before 2.9.4 does not check the padding length when verification fails, which allows remote attackers to have unspecified impact via a crafted HMAC, which triggers an out-of-bounds read.

Vulnerable Configurations

Part Description Count
Application
Wolfssl
15

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 familyGentoo Local Security Checks
NASL idGENTOO_GLSA-201612-53.NASL
descriptionThe remote host is affected by the vulnerability described in GLSA-201612-53 (CyaSSL: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in CyaSSL. Please review the CVE identifiers referenced below for details. Impact : An attacker could possibly execute arbitrary code with the privileges of the process, cause a Denial of Service condition, or conduct a man-in-the-middle attack. Workaround : There is no known workaround at this time.
last seen2020-06-01
modified2020-06-02
plugin id96228
published2017-01-03
reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/96228
titleGLSA-201612-53 : CyaSSL: Multiple vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201612-53.
#
# The advisory text is Copyright (C) 2001-2020 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(96228);
  script_version("3.2");
  script_cvs_date("Date: 2020/02/05");

  script_cve_id("CVE-2014-2896", "CVE-2014-2897", "CVE-2014-2898", "CVE-2014-2899", "CVE-2014-2900");
  script_xref(name:"GLSA", value:"201612-53");

  script_name(english:"GLSA-201612-53 : CyaSSL: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-201612-53
(CyaSSL: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in CyaSSL. Please review
      the CVE identifiers referenced below for details.
  
Impact :

    An attacker could possibly execute arbitrary code with the privileges of
      the process, cause a Denial of Service condition, or conduct a
      man-in-the-middle attack.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201612-53"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upstream has discontinued the software in favor of wolfSSL. Therefore,
      the CyaSSL package has been removed from the Gentoo repository and
      current users are advised to unmerge the package.
      # emerge --unmerge 'net-libs/cyassl'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:cyassl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/04/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/12/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/01/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  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:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"net-libs/cyassl", unaffected:make_list(), vulnerable:make_list("rle 2.9.4"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "CyaSSL");
}

References