Vulnerabilities > CVE-2018-5519 - Unspecified vulnerability in F5 products

047910
CVSS 5.5 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
SINGLE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
f5
nessus

Summary

On F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.3, or 11.2.1-11.6.3.1, administrative users by way of undisclosed methods can exploit the ssldump utility to write to arbitrary file paths. For users who do not have Advanced Shell access (for example, any user when licensed for Appliance Mode), this allows more permissive file access than intended.

Vulnerable Configurations

Part Description Count
Application
F5
398

Nessus

NASL familyF5 Networks Local Security Checks
NASL idF5_BIGIP_SOL46121888.NASL
descriptionAdministrative users by way of undisclosed methods can exploit the ssldump utilityto write to arbitrary file paths. For users who do not have Advanced Shell access (for example, any user when licensed for Appliance Mode), this allows more permissive file access than intended. (CVE-2018-5519) Impact This vulnerability allows unauthorized modification.
last seen2020-03-17
modified2018-11-02
plugin id118668
published2018-11-02
reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/118668
titleF5 Networks BIG-IP : ssldump vulnerability (K46121888)
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K46121888.
#
# The text description of this plugin is (C) F5 Networks.
#

include("compat.inc");

if (description)
{
  script_id(118668);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/09");

  script_cve_id("CVE-2018-5519");

  script_name(english:"F5 Networks BIG-IP : ssldump vulnerability (K46121888)");
  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:
"Administrative users by way of undisclosed methods can exploit the
ssldump utilityto write to arbitrary file paths. For users who do not
have Advanced Shell access (for example, any user when licensed for
Appliance Mode), this allows more permissive file access than
intended. (CVE-2018-5519)

Impact

This vulnerability allows unauthorized modification."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://support.f5.com/csp/article/K46121888"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution K46121888."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N");

  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_webaccelerator");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/05/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/04/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/02");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 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 = "K46121888";
vmatrix = make_array();

# AFM
vmatrix["AFM"] = make_array();
vmatrix["AFM"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["AFM"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");

# AM
vmatrix["AM"] = make_array();
vmatrix["AM"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["AM"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");

# APM
vmatrix["APM"] = make_array();
vmatrix["APM"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["APM"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");

# ASM
vmatrix["ASM"] = make_array();
vmatrix["ASM"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["ASM"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");

# AVR
vmatrix["AVR"] = make_array();
vmatrix["AVR"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["AVR"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");

# GTM
vmatrix["GTM"] = make_array();
vmatrix["GTM"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["GTM"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");

# LC
vmatrix["LC"] = make_array();
vmatrix["LC"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["LC"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");

# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["LTM"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");

# PEM
vmatrix["PEM"] = make_array();
vmatrix["PEM"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["PEM"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");

# WAM
vmatrix["WAM"] = make_array();
vmatrix["WAM"]["affected"  ] = make_list("13.0.0-13.1.0","12.1.0-12.1.3","11.2.1-11.6.3");
vmatrix["WAM"]["unaffected"] = make_list("14.0.0","13.1.0.6","12.1.3.4");


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");
}