GLSA-200510-11 : OpenSSL: SSL 2.0 protocol rollback

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200510-11.
#
# The advisory text is Copyright (C) 2001-2018 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(20031);
  script_version("1.20");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2005-2969");
  script_xref(name:"GLSA", value:"200510-11");

  script_name(english:"GLSA-200510-11 : OpenSSL: SSL 2.0 protocol rollback");
  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-200510-11
(OpenSSL: SSL 2.0 protocol rollback)

    Applications setting the SSL_OP_MSIE_SSLV2_RSA_PADDING option (or the
    SSL_OP_ALL option, that implies it) can be forced by a third-party to
    fallback to the less secure SSL 2.0 protocol, even if both parties
    support the more secure SSL 3.0 or TLS 1.0 protocols.
  
Impact :

    A man-in-the-middle attacker can weaken the encryption used to
    communicate between two parties, potentially revealing sensitive
    information.
  
Workaround :

    If possible, disable the use of SSL 2.0 in all OpenSSL-enabled
    applications."
  );
  # http://www.openssl.org/news/secadv/20051011.txt
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.openssl.org/news/secadv/20051011.txt"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200510-11"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All OpenSSL users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose dev-libs/openssl"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:openssl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/10/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/10/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2021 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:"dev-libs/openssl", unaffected:make_list("ge 0.9.7h", "rge 0.9.7g-r1", "rge 0.9.7e-r2"), vulnerable:make_list("lt 0.9.7h"))) flag++;

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