A flaw was found in the way TLS 1.2 uses RSA+MD5 signatures with Client Authentication and ServerKeyExchange messages during a TLS 1.2 handshakes. An attacker with a Man-in-the-Middle network position and the ability to force / observe the use of RSA+MD5 during a TLS Handshake, may be able to successfully generate a hash collision and impersonate a TLS client or server. The vulnerability of CVE-2015-7575 is relevant to cryptography software which supports TLS 1.2 only as earlier versions of TLS used different hash functionality in those protocols. (CVE-2015-7575)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K02201365.
#
# The text description of this plugin is (C) F5 Networks.
#
include("compat.inc");
if (description)
{
script_id(88703);
script_version("1.11");
script_cvs_date("Date: 2019/01/04 10:03:40");
script_cve_id("CVE-2015-7575");
script_name(english:"F5 Networks BIG-IP : SLOTH: TLS 1.2 handshake vulnerability (K02201365) (SLOTH)");
script_summary(english:"Checks the BIG-IP version.");
script_set_attribute(
attribute:"synopsis",
value:"The remote device is missing a vendor-supplied security patch."
);
script_set_attribute(
attribute:"description",
value:
"A flaw was found in the way TLS 1.2 uses RSA+MD5 signatures with
Client Authentication and ServerKeyExchange messages during a TLS 1.2
handshakes. An attacker with a Man-in-the-Middle network position and
the ability to force / observe the use of RSA+MD5 during a TLS
Handshake, may be able to successfully generate a hash collision and
impersonate a TLS client or server. The vulnerability of CVE-2015-7575
is relevant to cryptography software which supports TLS 1.2 only as
earlier versions of TLS used different hash functionality in those
protocols. (CVE-2015-7575)"
);
script_set_attribute(
attribute:"see_also",
value:"https://support.f5.com/csp/article/K02201365"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution K02201365."
);
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_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
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:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_access_policy_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_advanced_firewall_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_acceleration_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_security_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_visibility_and_reporting");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_global_traffic_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_link_controller");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_local_traffic_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_policy_enforcement_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");
script_set_attribute(attribute:"patch_publication_date", value:"2016/01/22");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/12");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"F5 Networks Local Security Checks");
script_dependencies("f5_bigip_detect.nbin");
script_require_keys("Host/local_checks_enabled", "Host/BIG-IP/hotfix", "Host/BIG-IP/modules", "Host/BIG-IP/version");
exit(0);
}
include("f5_func.inc");
if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
version = get_kb_item("Host/BIG-IP/version");
if ( ! version ) audit(AUDIT_OS_NOT, "F5 Networks BIG-IP");
if ( isnull(get_kb_item("Host/BIG-IP/hotfix")) ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/hotfix");
if ( ! get_kb_item("Host/BIG-IP/modules") ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/modules");
sol = "K02201365";
vmatrix = make_array();
# AFM
vmatrix["AFM"] = make_array();
vmatrix["AFM"]["affected" ] = make_list("11.5.1-11.5.1HF2","11.5.0-11.5.0HF3");
vmatrix["AFM"]["unaffected"] = make_list("12.0.0-12.1.0","11.5.1HF3-11.6.0","11.5.0HF4-11.5.0HF7","11.3.0-11.4.1");
# AM
vmatrix["AM"] = make_array();
vmatrix["AM"]["affected" ] = make_list("11.5.1-11.5.1HF2","11.5.0-11.5.0HF3");
vmatrix["AM"]["unaffected"] = make_list("12.0.0-12.1.0","11.5.1HF3-11.6.0","11.5.0HF4-11.5.0HF7","11.4.0-11.4.1");
# APM
vmatrix["APM"] = make_array();
vmatrix["APM"]["affected" ] = make_list("11.5.1-11.5.1HF2","11.5.0-11.5.0HF3");
vmatrix["APM"]["unaffected"] = make_list("12.0.0-12.1.0","11.5.1HF3-11.6.0","11.5.0HF4-11.5.0HF7","11.0.0-11.4.1","10.1.0-10.2.4");
# ASM
vmatrix["ASM"] = make_array();
vmatrix["ASM"]["affected" ] = make_list("11.5.1-11.5.1HF2","11.5.0-11.5.0HF3");
vmatrix["ASM"]["unaffected"] = make_list("12.0.0-12.1.0","11.5.1HF3-11.6.0","11.5.0HF4-11.5.0HF7","11.0.0-11.4.1","10.1.0-10.2.4");
# AVR
vmatrix["AVR"] = make_array();
vmatrix["AVR"]["affected" ] = make_list("11.5.1-11.5.1HF2","11.5.0-11.5.0HF3");
vmatrix["AVR"]["unaffected"] = make_list("12.0.0-12.1.0","11.5.1HF3-11.6.0","11.5.0HF4-11.5.0HF7","11.0.0-11.4.1");
# GTM
vmatrix["GTM"] = make_array();
vmatrix["GTM"]["affected" ] = make_list("11.5.1-11.5.1HF2","11.5.0-11.5.0HF3");
vmatrix["GTM"]["unaffected"] = make_list("11.5.1HF3-11.6.0","11.5.0HF4-11.5.0HF7","11.0.0-11.4.1","10.1.0-10.2.4");
# LC
vmatrix["LC"] = make_array();
vmatrix["LC"]["affected" ] = make_list("11.5.1-11.5.1HF2","11.5.0-11.5.0HF3");
vmatrix["LC"]["unaffected"] = make_list("12.0.0-12.1.0","11.5.1HF3-11.6.0","11.5.0HF4-11.5.0HF7","11.0.0-11.4.1","10.1.0-10.2.4");
# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected" ] = make_list("11.5.1-11.5.1HF2","11.5.0-11.5.0HF3");
vmatrix["LTM"]["unaffected"] = make_list("12.0.0-12.1.0","11.5.1HF3-11.6.0","11.5.0HF4-11.5.0HF7","11.0.0-11.4.1","10.1.0-10.2.4");
# PEM
vmatrix["PEM"] = make_array();
vmatrix["PEM"]["affected" ] = make_list("11.5.1-11.5.1HF2","11.5.0-11.5.0HF3");
vmatrix["PEM"]["unaffected"] = make_list("12.0.0-12.1.0","11.5.1HF3-11.6.0","11.5.0HF4-11.5.0HF7","11.3.0-11.4.1");
if (bigip_is_affected(vmatrix:vmatrix, sol:sol))
{
if (report_verbosity > 0) security_warning(port:0, extra:bigip_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = bigip_get_tested_modules();
audit_extra = "For BIG-IP module(s) " + tested + ",";
if (tested) audit(AUDIT_INST_VER_NOT_VULN, audit_extra, version);
else audit(AUDIT_HOST_NOT, "running any of the affected modules");
}
Vendor | Product | Version | CPE |
---|---|---|---|
f5 | big-ip_access_policy_manager | cpe:/a:f5:big-ip_access_policy_manager | |
f5 | big-ip_advanced_firewall_manager | cpe:/a:f5:big-ip_advanced_firewall_manager | |
f5 | big-ip_application_acceleration_manager | cpe:/a:f5:big-ip_application_acceleration_manager | |
f5 | big-ip_application_security_manager | cpe:/a:f5:big-ip_application_security_manager | |
f5 | big-ip_application_visibility_and_reporting | cpe:/a:f5:big-ip_application_visibility_and_reporting | |
f5 | big-ip_global_traffic_manager | cpe:/a:f5:big-ip_global_traffic_manager | |
f5 | big-ip_link_controller | cpe:/a:f5:big-ip_link_controller | |
f5 | big-ip_local_traffic_manager | cpe:/a:f5:big-ip_local_traffic_manager | |
f5 | big-ip_policy_enforcement_manager | cpe:/a:f5:big-ip_policy_enforcement_manager | |
f5 | big-ip | cpe:/h:f5:big-ip |