Vulnerabilities > CVE-2019-0008 - Out-of-bounds Write vulnerability in Juniper Junos

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
juniper
CWE-787
critical
nessus
NVD
Published: 2019-04-10
Updated: 2021-10-25

Summary

A certain sequence of valid BGP or IPv6 BFD packets may trigger a stack based buffer overflow in the Junos OS Packet Forwarding Engine manager (FXPC) process on QFX5000 series, EX4300, EX4600 devices. This issue can result in a crash of the fxpc daemon or may potentially lead to remote code execution. Affected releases are Juniper Networks Junos OS on QFX 5000 series, EX4300, EX4600 are: 14.1X53; 15.1X53 versions prior to 15.1X53-D235; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R3; 17.3 versions prior to 17.3R3-S2, 17.3R4; 17.4 versions prior to 17.4R2-S1, 17.4R3; 18.1 versions prior to 18.1R3-S1, 18.1R4; 18.2 versions prior to 18.2R2; 18.2X75 versions prior to 18.2X75-D30; 18.3 versions prior to 18.3R2.

Vulnerable Configurations

Part Description Count
OS
Juniper
250
Hardware
Juniper
10

Common Weakness Enumeration (CWE)

Nessus

NASL familyJunos Local Security Checks
NASL idJUNIPER_JSA10930.NASL
descriptionThe version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by a stack based overflow vulnerability in the Junos OS Packet Forwarding Engine manager (FXPC) process on QFX5000 series. A remote attacker can exploit it which can lead to a remote code execution as referenced in the JSA10930 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application
last seen2020-06-01
modified2020-06-02
plugin id124327
published2019-04-26
reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/124327
titleJuniper JSA10930
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(124327);
  script_version("1.2");
  script_cvs_date("Date: 2020/01/17");

  script_cve_id("CVE-2019-0008");

  script_name(english:"Juniper JSA10930");
  script_summary(english:"Checks the Junos version and build date.");

  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 tested product installed on the remote host is prior to
tested version. It is, therefore, affected by a stack based overflow 
vulnerability in the Junos OS Packet Forwarding Engine manager (FXPC)
process on QFX5000 series. A remote attacker can exploit it which can
lead to a remote code execution  as referenced in the JSA10930 advisory.
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://kb.juniper.net/JSA10930");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper
advisory JSA10930");

  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-0008");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/04/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/26");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:juniper:junos");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("junos_version.nasl");
  script_require_keys("Host/Juniper/JUNOS/Version", "Host/Juniper/model");

  exit(0);
}

include("audit.inc");
include("junos.inc");
include("misc_func.inc");

ver = get_kb_item_or_exit('Host/Juniper/JUNOS/Version');
fixes = make_array();

model = get_kb_item_or_exit('Host/Juniper/model');

#QFX5000 Series which means QFX5000, QFX5100, QFX5200 and so on. Checking QFX5 for all of them
if ( 'QFX5' >!< model && 'EX4300' >!< model && 'EX4600' >!< model)
  audit(AUDIT_INST_VER_NOT_VULN, 'Junos', ver);

fixes["14.1X53"] = "14.1X53-D51";
fixes["15.1X53"] = "15.1X53-D235";
fixes["17.1"] = "17.1R3";
fixes["17.2"] = "17.2R3";
fixes["17.3"] = "17.3R3-S2";
fixes["17.4"] = "17.4R2-S1";
fixes["18.1"] = "18.1R3-S1";
fixes["18.2"] = "18.2R2";
fixes["18.2X75"] = "18.2X75-D30";
fixes["18.3"] = "18.3R2";

fix = check_junos(ver:ver, fixes:fixes, exit_on_fail:TRUE);
report = get_report(ver:ver, fix:fix);
security_report_v4(severity:SECURITY_HOLE, port:0, extra:report);

References