Vulnerabilities > CVE-2014-2900 - Cryptographic Issues vulnerability in Yassl Cyassl

047910
CVSS 5.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
NONE
network
yassl
CWE-310
nessus
NVD
Published: 2014-04-22
Updated: 2017-07-01

Summary

wolfSSL CyaSSL before 2.9.4 does not properly validate X.509 certificates with unknown critical extensions, which allows man-in-the-middle attackers to spoof servers via crafted X.509 certificate.

Vulnerable Configurations

Part Description Count
Application
Yassl
45

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Signature Spoofing by Key Recreation
    An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.

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