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nessusThis script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.F5_BIGIP_SOL44994972.NASL
HistoryMar 31, 2022 - 12:00 a.m.

F5 Networks BIG-IP : Linux kernel vulnerability (K44994972)

2022-03-3100:00:00
This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
62

4.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

6.3 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

The version of F5 Networks BIG-IP installed on the remote host is prior to 17.1.0. It is, therefore, affected by a vulnerability as referenced in the K44994972 advisory.

  • A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of service. (CVE-2020-25704)

Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K44994972.
#
# @NOAGENT@
##

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

if (description)
{
  script_id(159379);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/08");

  script_cve_id("CVE-2020-25704");

  script_name(english:"F5 Networks BIG-IP : Linux kernel vulnerability (K44994972)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"The version of F5 Networks BIG-IP installed on the remote host is prior to 17.1.0. It is, therefore, affected by a
vulnerability as referenced in the K44994972 advisory.

  - A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using
    PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of
    service. (CVE-2020-25704)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://my.f5.com/manage/s/article/K44994972");
  script_set_attribute(attribute:"solution", value:
"Upgrade to one of the non-vulnerable versions listed in the F5 Solution K44994972.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/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-2020-25704");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/03/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/03/31");

  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_security_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_domain_name_system");
  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_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:/h:f5:big-ip_protocol_security_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"F5 Networks Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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);
var 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');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var sol = 'K44994972';
var vmatrix = {
  'AFM': {
    'affected': [
      '17.0.0','16.1.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.6','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.1.0'
    ],
  },
  'APM': {
    'affected': [
      '17.0.0','16.1.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.6','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.1.0'
    ],
  },
  'ASM': {
    'affected': [
      '17.0.0','16.1.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.6','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.1.0'
    ],
  },
  'DNS': {
    'affected': [
      '17.0.0','16.1.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.6','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.1.0'
    ],
  },
  'GTM': {
    'affected': [
      '17.0.0','16.1.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.6','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.1.0'
    ],
  },
  'LTM': {
    'affected': [
      '17.0.0','16.1.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.6','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.1.0'
    ],
  },
  'PEM': {
    'affected': [
      '17.0.0','16.1.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.6','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.1.0'
    ],
  },
  'PSM': {
    'affected': [
      '17.0.0','16.1.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.6','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.1.0'
    ],
  },
  'WOM': {
    'affected': [
      '17.0.0','16.1.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.6','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.1.0'
    ],
  }
};

if (bigip_is_affected(vmatrix:vmatrix, sol:sol))
{
  var extra = NULL;
  if (report_verbosity > 0) extra = bigip_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : extra
  );
}
else
{
  var tested = bigip_get_tested_modules();
  var 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');
}
VendorProductVersionCPE
f5big-ip_global_traffic_managercpe:/a:f5:big-ip_global_traffic_manager
f5big-ip_local_traffic_managercpe:/a:f5:big-ip_local_traffic_manager
f5big-ip_policy_enforcement_managercpe:/a:f5:big-ip_policy_enforcement_manager
f5big-ip_wan_optimization_managercpe:/a:f5:big-ip_wan_optimization_manager
f5big-ip_protocol_security_managercpe:/h:f5:big-ip_protocol_security_manager
f5big-ipcpe:/h:f5:big-ip
f5big-ip_access_policy_managercpe:/a:f5:big-ip_access_policy_manager
f5big-ip_advanced_firewall_managercpe:/a:f5:big-ip_advanced_firewall_manager
f5big-ip_application_security_managercpe:/a:f5:big-ip_application_security_manager
f5big-ip_domain_name_systemcpe:/a:f5:big-ip_domain_name_system

4.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

6.3 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%