CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS
Percentile
99.3%
The remote Mac OS X host has a version of the Opera web browser installed that is prior to 28.0.1750.40. It is, therefore, affected by a security feature bypass vulnerability, known as FREAK (Factoring attack on RSA-EXPORT Keys), due to the support of weak EXPORT_RSA cipher suites with keys less than or equal to 512 bits. A man-in-the-middle attacker may be able to downgrade the SSL/TLS connection to use EXPORT_RSA cipher suites which can be factored in a short amount of time, allowing the attacker to intercept and decrypt the traffic.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(81882);
script_version("1.9");
script_cvs_date("Date: 2019/11/22");
script_cve_id("CVE-2015-0204");
script_bugtraq_id(71936);
script_xref(name:"CERT", value:"243585");
script_name(english:"Opera < 28.0.1750.40 SSL/TLS EXPORT_RSA Ciphers Downgrade MitM (Mac OS X) (FREAK)");
script_summary(english:"Checks the version of Opera browser.");
script_set_attribute(attribute:"synopsis", value:
"The remote Mac OS X host has a web browser installed that is affected
by the FREAK vulnerability.");
script_set_attribute(attribute:"description", value:
"The remote Mac OS X host has a version of the Opera web browser
installed that is prior to 28.0.1750.40. It is, therefore, affected by
a security feature bypass vulnerability, known as FREAK (Factoring
attack on RSA-EXPORT Keys), due to the support of weak EXPORT_RSA
cipher suites with keys less than or equal to 512 bits. A
man-in-the-middle attacker may be able to downgrade the SSL/TLS
connection to use EXPORT_RSA cipher suites which can be factored in a
short amount of time, allowing the attacker to intercept and decrypt
the traffic.");
script_set_attribute(attribute:"see_also", value:"https://www.smacktls.com/#freak");
script_set_attribute(attribute:"see_also", value:"http://www.opera.com/docs/changelogs/unified/2800/");
script_set_attribute(attribute:"solution", value:
"Upgrade to Opera version 28.0 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-0204");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2015/01/08");
script_set_attribute(attribute:"patch_publication_date", value:"2015/03/10");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/17");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:opera:opera_browser");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"MacOS X Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("macosx_opera_installed.nbin");
script_require_keys("installed_sw/Opera");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("install_func.inc");
os = get_kb_item("Host/MacOSX/Version");
if (!os) audit(AUDIT_OS_NOT, "Mac OS X");
app = "Opera";
install = get_single_install(app_name:app, exit_if_unknown_ver:TRUE);
path = install['path'];
version = install['version'];
fix = '28.0.1750.40';
if (ver_compare(ver:version, fix:fix, strict:FALSE) == -1)
{
if (report_verbosity > 0)
{
report =
'\n Path : ' + path +
'\n Installed version : ' + version +
'\n Fixed version : ' + fix +
'\n';
security_warning(port:0, extra:report);
}
else security_warning(0);
}
else audit(AUDIT_INST_VER_NOT_VULN, app, version);