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
82.5%
The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks a check of the refusal deadline for X connections, which makes it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time window. (CVE-2015-5352)
Impact
A remote attacker may be able to bypass intended access restrictions.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K17461.
#
# The text description of this plugin is (C) F5 Networks.
#
include("compat.inc");
if (description)
{
script_id(97560);
script_version("3.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/03/10");
script_cve_id("CVE-2015-5352");
script_bugtraq_id(75525);
script_name(english:"F5 Networks BIG-IP : OpenSSH vulnerability (K17461)");
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:
"The x11_open_helper function in channels.c in ssh in OpenSSH before
6.9, when ForwardX11Trusted mode is not used, lacks a check of the
refusal deadline for X connections, which makes it easier for remote
attackers to bypass intended access restrictions via a connection
outside of the permitted time window. (CVE-2015-5352)
Impact
A remote attacker may be able to bypass intended access restrictions."
);
script_set_attribute(
attribute:"see_also",
value:"https://support.f5.com/csp/article/K17461"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution K17461."
);
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:ND/RL:OF/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:"potential_vulnerability", value:"true");
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:/a:f5:big-ip_wan_optimization_manager");
script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_webaccelerator");
script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");
script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip_protocol_security_manager");
script_set_attribute(attribute:"vuln_publication_date", value:"2015/08/03");
script_set_attribute(attribute:"patch_publication_date", value:"2015/10/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/07");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2017-2021 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", "Settings/ParanoidReport");
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 = "K17461";
vmatrix = make_array();
if (report_paranoia < 2) audit(AUDIT_PARANOID);
# AFM
vmatrix["AFM"] = make_array();
vmatrix["AFM"]["affected" ] = make_list("12.0.0-12.1.2","11.3.0-11.6.3");
vmatrix["AFM"]["unaffected"] = make_list("13.0.0","12.1.3");
# AM
vmatrix["AM"] = make_array();
vmatrix["AM"]["affected" ] = make_list("12.0.0-12.1.2","11.4.0-11.6.3");
vmatrix["AM"]["unaffected"] = make_list("13.0.0","12.1.3");
# APM
vmatrix["APM"] = make_array();
vmatrix["APM"]["affected" ] = make_list("12.0.0-12.1.2","11.0.0-11.6.3","10.1.0-10.2.4");
vmatrix["APM"]["unaffected"] = make_list("13.0.0","12.1.3");
# ASM
vmatrix["ASM"] = make_array();
vmatrix["ASM"]["affected" ] = make_list("12.0.0-12.1.2","11.0.0-11.6.3","10.1.0-10.2.4");
vmatrix["ASM"]["unaffected"] = make_list("13.0.0","12.1.3");
# AVR
vmatrix["AVR"] = make_array();
vmatrix["AVR"]["affected" ] = make_list("12.0.0-12.1.2","11.0.0-11.6.3");
vmatrix["AVR"]["unaffected"] = make_list("13.0.0","12.1.3");
# LC
vmatrix["LC"] = make_array();
vmatrix["LC"]["affected" ] = make_list("12.0.0-12.1.2","11.0.0-11.6.3","10.1.0-10.2.4");
vmatrix["LC"]["unaffected"] = make_list("13.0.0","12.1.3");
# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected" ] = make_list("12.0.0-12.1.2","11.0.0-11.6.3","10.1.0-10.2.4");
vmatrix["LTM"]["unaffected"] = make_list("13.0.0","12.1.3");
# PEM
vmatrix["PEM"] = make_array();
vmatrix["PEM"]["affected" ] = make_list("12.0.0-12.1.2","11.3.0-11.6.3");
vmatrix["PEM"]["unaffected"] = make_list("13.0.0","12.1.3");
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_link_controller | cpe:/a:f5:big-ip_link_controller | |
f5 | big-ip_protocol_security_manager | cpe:/h:f5:big-ip_protocol_security_manager | |
f5 | big-ip_application_visibility_and_reporting | cpe:/a:f5:big-ip_application_visibility_and_reporting | |
f5 | big-ip_policy_enforcement_manager | cpe:/a:f5:big-ip_policy_enforcement_manager | |
f5 | big-ip_wan_optimization_manager | cpe:/a:f5:big-ip_wan_optimization_manager | |
f5 | big-ip | cpe:/h:f5:big-ip | |
f5 | big-ip_application_security_manager | cpe:/a:f5:big-ip_application_security_manager | |
f5 | big-ip_advanced_firewall_manager | cpe:/a:f5:big-ip_advanced_firewall_manager | |
f5 | big-ip_local_traffic_manager | cpe:/a:f5:big-ip_local_traffic_manager | |
f5 | big-ip_access_policy_manager | cpe:/a:f5:big-ip_access_policy_manager |