Vulnerabilities > CVE-2020-5883 - Memory Leak vulnerability in F5 products

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
f5
CWE-401
nessus
NVD
Published: 2020-04-30
Updated: 2021-07-21

Summary

On BIG-IP 15.0.0-15.0.1, 14.1.0-14.1.2.3, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, when a virtual server is configured with HTTP explicit proxy and has an attached HTTP_PROXY_REQUEST iRule, POST requests sent to the virtual server cause an xdata memory leak.

Vulnerable Configurations

Part Description Count
Application
F5
638

Common Weakness Enumeration (CWE)

Nessus

NASL familyF5 Networks Local Security Checks
NASL idF5_BIGIP_SOL12234501.NASL
descriptionWhen a virtual server is configured with HTTP explicit proxy and has an attached HTTP_PROXY_REQUEST iRule, POST requests sent to the virtual server cause an xdata memory leak.(CVE-2020-5883) Impact The BIG-IP system may become vulnerable to conditions that result when it is out of memory because of a memory leak.
last seen2020-05-09
modified2020-04-30
plugin id136132
published2020-04-30
reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/136132
titleF5 Networks BIG-IP : BIG-IP virtual server vulnerability (K12234501)
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K12234501.
#
# The text description of this plugin is (C) F5 Networks.
#

include("compat.inc");

if (description)
{
  script_id(136132);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/08");

  script_cve_id("CVE-2020-5883");

  script_name(english:"F5 Networks BIG-IP : BIG-IP virtual server vulnerability (K12234501)");
  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:
"When a virtual server is configured with HTTP explicit proxy and has
an attached HTTP_PROXY_REQUEST iRule, POST requests sent to the
virtual server cause an xdata memory leak.(CVE-2020-5883)

Impact

The BIG-IP system may become vulnerable to conditions that result when
it is out of memory because of a memory leak."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://support.f5.com/csp/article/K12234501"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution K12234501."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-5883");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  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_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:"2020/04/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/30");
  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 = "K12234501";
vmatrix = make_array();

# AFM
vmatrix["AFM"] = make_array();
vmatrix["AFM"]["affected"  ] = make_list("15.0.0-15.0.1","14.1.0-14.1.2","14.0.0-14.0.1","13.1.0-13.1.3");
vmatrix["AFM"]["unaffected"] = make_list("15.1.0","15.0.1.1","14.1.2.4","14.0.1.1","13.1.3.2");

# AM
vmatrix["AM"] = make_array();
vmatrix["AM"]["affected"  ] = make_list("15.0.0-15.0.1","14.1.0-14.1.2","14.0.0-14.0.1","13.1.0-13.1.3");
vmatrix["AM"]["unaffected"] = make_list("15.1.0","15.0.1.1","14.1.2.4","14.0.1.1","13.1.3.2");

# APM
vmatrix["APM"] = make_array();
vmatrix["APM"]["affected"  ] = make_list("15.0.0-15.0.1","14.1.0-14.1.2","14.0.0-14.0.1","13.1.0-13.1.3");
vmatrix["APM"]["unaffected"] = make_list("15.1.0","15.0.1.1","14.1.2.4","14.0.1.1","13.1.3.2");

# ASM
vmatrix["ASM"] = make_array();
vmatrix["ASM"]["affected"  ] = make_list("15.0.0-15.0.1","14.1.0-14.1.2","14.0.0-14.0.1","13.1.0-13.1.3");
vmatrix["ASM"]["unaffected"] = make_list("15.1.0","15.0.1.1","14.1.2.4","14.0.1.1","13.1.3.2");

# LC
vmatrix["LC"] = make_array();
vmatrix["LC"]["affected"  ] = make_list("15.0.0-15.0.1","14.1.0-14.1.2","14.0.0-14.0.1","13.1.0-13.1.3");
vmatrix["LC"]["unaffected"] = make_list("15.1.0","15.0.1.1","14.1.2.4","14.0.1.1","13.1.3.2");

# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected"  ] = make_list("15.0.0-15.0.1","14.1.0-14.1.2","14.0.0-14.0.1","13.1.0-13.1.3");
vmatrix["LTM"]["unaffected"] = make_list("15.1.0","15.0.1.1","14.1.2.4","14.0.1.1","13.1.3.2");

# PEM
vmatrix["PEM"] = make_array();
vmatrix["PEM"]["affected"  ] = make_list("15.0.0-15.0.1","14.1.0-14.1.2","14.0.0-14.0.1","13.1.0-13.1.3");
vmatrix["PEM"]["unaffected"] = make_list("15.1.0","15.0.1.1","14.1.2.4","14.0.1.1","13.1.3.2");

# WAM
vmatrix["WAM"] = make_array();
vmatrix["WAM"]["affected"  ] = make_list("15.0.0-15.0.1","14.1.0-14.1.2","14.0.0-14.0.1","13.1.0-13.1.3");
vmatrix["WAM"]["unaffected"] = make_list("15.1.0","15.0.1.1","14.1.2.4","14.0.1.1","13.1.3.2");


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 any of the affected modules");
}

References