F5 Networks BIG-IP : SNMPv3 HMAC verification vulnerability (SOL8939)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution SOL8939.
#
# The text description of this plugin is (C) F5 Networks.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(78225);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2008-0960");
  script_bugtraq_id(29623);
  script_xref(name:"CERT", value:"878044");

  script_name(english:"F5 Networks BIG-IP : SNMPv3 HMAC verification vulnerability (SOL8939)");
  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:
"SNMPv3 HMAC verification relies on the client to specify the HMAC
length. This flexibility allows remote attackers to bypass SNMP
authentication by specifying a length value of 1 , which only checks
the first byte."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://support.f5.com/csp/article/K8939"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution SOL8939."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'D2ExploitPack');
  script_cwe_id(287);

  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_application_security_manager");
  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_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:"patch_publication_date", value:"2008/07/15");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2021 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 = "SOL8939";
vmatrix = make_array();

if (report_paranoia < 2) audit(AUDIT_PARANOID);

# ASM
vmatrix["ASM"] = make_array();
vmatrix["ASM"]["affected"  ] = make_list("9.3.0-9.3.1","9.4.0-9.4.5");
vmatrix["ASM"]["unaffected"] = make_list("9.3.1HF3","9.4.5HF2","9.4.6-9.4.8","10","11");

# GTM
vmatrix["GTM"] = make_array();
vmatrix["GTM"]["affected"  ] = make_list("9.3.0-9.3.1","9.4.0-9.4.5");
vmatrix["GTM"]["unaffected"] = make_list("9.3.1HF3","9.4.5HF2","9.4.6-9.4.8","10","11");

# LC
vmatrix["LC"] = make_array();
vmatrix["LC"]["affected"  ] = make_list("9.3.0-9.3.1","9.4.0-9.4.5");
vmatrix["LC"]["unaffected"] = make_list("9.3.1HF3","9.4.5HF2","9.4.6-9.4.8","10","11");

# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected"  ] = make_list("9.3.0-9.3.1","9.4.0-9.4.5","9.6.0-9.6.1");
vmatrix["LTM"]["unaffected"] = make_list("9.3.1HF3","9.4.5HF2","9.4.6-9.4.8","9.6.1HF2","10","11");

# PSM
vmatrix["PSM"] = make_array();
vmatrix["PSM"]["affected"  ] = make_list("9.4.5");
vmatrix["PSM"]["unaffected"] = make_list("9.4.5HF2","9.4.6-9.4.8","10","11");

# WAM
vmatrix["WAM"] = make_array();
vmatrix["WAM"]["affected"  ] = make_list("9.4.0-9.4.5");
vmatrix["WAM"]["unaffected"] = make_list("9.4.5HF2","9.4.6-9.4.8","10","11");


if (bigip_is_affected(vmatrix:vmatrix, sol:sol))
{
  if (report_verbosity > 0) security_hole(port:0, extra:bigip_report_get());
  else security_hole(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");
}