F5 Networks BIG-IP : BIG-IP Client SSL Security Advisory (K44020030)

2020-10-29T00:00:00
ID F5_BIGIP_SOL44020030.NASL
Type nessus
Reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-10-29T00:00:00

Description

The Traffic Management Microkernel (TMM) process may consume excessive resources when processing SSL traffic and client authentication are enabled on the client SSL profile.

Impact

TMM memory may eventually become exhausted and may result in the system producing a core file. The BIG-IP system may temporarily fail to process traffic as it recovers from TMM restarting. If the system is configured as part of a high-availability pair, the device may fail over.

The BIG-IP 4000s and 4200v platforms (C113) may encounter the issue more rapidly than other BIG-IP platforms.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K44020030.
#
# The text description of this plugin is (C) F5 Networks.
#

include("compat.inc");

if (description)
{
  script_id(142041);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/10/29");

  script_name(english:"F5 Networks BIG-IP : BIG-IP Client SSL Security Advisory (K44020030)");
  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 Traffic Management Microkernel (TMM) process may consume excessive
resources when processing SSL traffic and client authentication are
enabled on the client SSL profile.

Impact

TMM memory may eventually become exhausted and may result in the
system producing a core file. The BIG-IP system may temporarily fail
to process traffic as it recovers from TMM restarting. If the system
is configured as part of a high-availability pair, the device may fail
over.

The BIG-IP 4000s and 4200v platforms (C113) may encounter the issue
more rapidly than other BIG-IP platforms."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://support.f5.com/csp/article/K44020030"
  );
  script_set_attribute(
    attribute:"solution",
    value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution K44020030."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_local_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/10/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/10/29");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 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 = "K44020030";
vmatrix = make_array();

# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected"  ] = make_list("15.0.0-15.1.0","14.1.0-14.1.2","13.1.0-13.1.3","12.1.0-12.1.5");
vmatrix["LTM"]["unaffected"] = make_list("16.0.0","15.1.1","14.1.2.8","12.1.5.2");


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 the affected module LTM");
}