7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
12.6%
The version of Junos OS installed on the remote host is affected by multiple vulnerabilities as referenced in the JSA11222 advisory.
A local privilege escalation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged user to cause the Juniper DHCP daemon (jdhcpd) process to crash, resulting in a Denial of Service (DoS), or execute arbitrary commands as root. Continued processing of malicious input will repeatedly crash the system and sustain the Denial of Service (DoS) condition. This issue affects:
Juniper Networks Junos OS: All versions, including the following supported releases: 15.1 versions prior to 15.1R7-S10; 17.4 versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO; All versions of 21.1-EVO. (CVE-2021-31359)
An improper privilege management vulnerability in the Juniper Networks Junos OS and Junos OS Evolved command-line interpreter (CLI) allows a low-privileged user to overwrite local files as root, possibly leading to a system integrity issue or Denial of Service (DoS). Depending on the files overwritten, exploitation of this vulnerability could lead to a sustained Denial of Service (DoS) condition, requiring manual user intervention to recover. This issue affects: Juniper Networks Junos OS: All versions, including the following supported releases: 15.1 versions prior to 15.1R7-S10; 17.4 versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO; All versions of 21.1-EVO. (CVE-2021-31360)
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 Network Security, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(154126);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/13");
script_cve_id("CVE-2021-31359", "CVE-2021-31360");
script_xref(name:"JSA", value:"JSA11222");
script_xref(name:"IAVA", value:"2021-A-0478-S");
script_name(english:"Juniper Junos OS Multiple Vulnerabilities (JSA11222)");
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 Junos OS installed on the remote host is affected by multiple vulnerabilities as referenced in the
JSA11222 advisory.
- A local privilege escalation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows a
local, low-privileged user to cause the Juniper DHCP daemon (jdhcpd) process to crash, resulting in a
Denial of Service (DoS), or execute arbitrary commands as root. Continued processing of malicious input
will repeatedly crash the system and sustain the Denial of Service (DoS) condition. This issue affects:
Juniper Networks Junos OS: All versions, including the following supported releases: 15.1 versions prior
to 15.1R7-S10; 17.4 versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to
18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions
prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R2-S2,
20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to
20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2. Juniper Networks Junos OS Evolved: All
versions prior to 20.4R2-S3-EVO; All versions of 21.1-EVO. (CVE-2021-31359)
- An improper privilege management vulnerability in the Juniper Networks Junos OS and Junos OS Evolved
command-line interpreter (CLI) allows a low-privileged user to overwrite local files as root, possibly
leading to a system integrity issue or Denial of Service (DoS). Depending on the files overwritten,
exploitation of this vulnerability could lead to a sustained Denial of Service (DoS) condition, requiring
manual user intervention to recover. This issue affects: Juniper Networks Junos OS: All versions,
including the following supported releases: 15.1 versions prior to 15.1R7-S10; 17.4 versions prior to
17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to
19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4
versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to
20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to
21.1R1-S1, 21.1R2. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO; All versions of
21.1-EVO. (CVE-2021-31360)
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/JSA11222");
script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper advisory JSA11222");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/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:H/I:H/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-2021-31359");
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:"2021/10/13");
script_set_attribute(attribute:"patch_publication_date", value:"2021/10/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/10/13");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/o:juniper:junos");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Junos Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("junos_version.nasl");
script_require_keys("Host/Juniper/JUNOS/Version");
exit(0);
}
include('junos.inc');
var ver = get_kb_item_or_exit('Host/Juniper/JUNOS/Version');
var vuln_ranges = [
{'min_ver':'15.1', 'fixed_ver':'15.1R7-S10'},
{'min_ver':'17.4', 'fixed_ver':'17.4R3-S5'},
{'min_ver':'18.3', 'fixed_ver':'18.3R3-S5'},
{'min_ver':'18.4', 'fixed_ver':'18.4R3-S9'},
{'min_ver':'19.1', 'fixed_ver':'19.1R3-S6'},
{'min_ver':'19.2', 'fixed_ver':'19.2R1-S7'},
{'min_ver':'19.2R2', 'fixed_ver':'19.2R3-S3'},
{'min_ver':'19.3', 'fixed_ver':'19.3R2-S6'},
{'min_ver':'19.3R3', 'fixed_ver':'19.3R3-S3'},
{'min_ver':'19.4', 'fixed_ver':'19.4R3-S6'},
{'min_ver':'20.1', 'fixed_ver':'20.1R2-S2'},
{'min_ver':'20.1R3', 'fixed_ver':'20.1R3-S1'},
{'min_ver':'20.2', 'fixed_ver':'20.2R3-S2'},
{'min_ver':'20.3', 'fixed_ver':'20.3R3'},
{'min_ver':'20.4', 'fixed_ver':'20.4R2-S1', 'fixed_display':'20.4R2-S1, 20.4R3'},
{'min_ver':'21.1', 'fixed_ver':'21.1R1-S1', 'fixed_display':'21.1R1-S1, 21.1R2'}
];
var fix = junos_compare_range(target_version:ver, vuln_ranges:vuln_ranges);
if (empty_or_null(fix)) audit(AUDIT_INST_VER_NOT_VULN, 'Junos OS', ver);
var report = get_report(ver:ver, fix:fix);
security_report_v4(severity:SECURITY_HOLE, port:0, extra:report);
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
12.6%