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CVE-2021-0207

CVE information

Published

3 years ago

Last Modified

3 years ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

High

Impact Analysis

Description

An improper interpretation conflict of certain data between certain software components within the Juniper Networks Junos OS devices does not allow certain traffic to pass through the device upon receipt from an ingress interface filtering certain specific types of traffic which is then being redirected to an egress interface on a different VLAN. This causes a Denial of Service (DoS) to those clients sending these particular types of traffic. Such traffic being sent by a client may appear genuine, but is non-standard in nature and should be considered as potentially malicious, and can be targeted to the device, or destined through it for the issue to occur. This issues affects IPv4 and IPv6 traffic. An indicator of compromise may be found by checking log files. You may find that traffic on the input interface has 100% of traffic flowing into the device, yet the egress interface shows 0 pps leaving the device. For example: [show interfaces "interface" statistics detail] Output between two interfaces would reveal something similar to: Ingress, first interface: -------------------- Interface Link Input packets (pps) Output packets (pps) et-0/0/0 Up 9999999999 (9999) 1 (0) -------------------- Egress, second interface: -------------------- Interface Link Input packets (pps) Output packets (pps) et-0/0/1 Up 0 (0) 9999999999 (0) -------------------- Dropped packets will not show up in DDoS monitoring/protection counters as issue is not caused by anti-DDoS protection mechanisms. This issue affects: Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S7 on NFX250, QFX5K Series, EX4600; 17.4 versions prior to 17.4R2-S11, 17.4R3-S3 on NFX250, QFX5K Series, EX4600; 18.1 versions prior to 18.1R3-S9 on NFX250, QFX5K Series, EX2300 Series, EX3400 Series, EX4600; 18.2 versions prior to 18.2R3-S3 on NFX250, QFX5K Series, EX2300 Series, EX3400 Series, EX4300 Multigigabit, EX4600; 18.3 versions prior to 18.3R3-S1 on NFX250, QFX5K Series, EX2300 Series, EX3400 Series, EX4300 Multigigabit, EX4600 Series; 18.4 versions prior to 18.4R1-S5, 18.4R2-S3, 18.4R3 on NFX250, QFX5K Series, EX2300 Series, EX3400 Series, EX4300 Multigigabit, EX4600 Series; 19.1 versions prior to 19.1R1-S5, 19.1R2-S1, 19.1R3 on NFX250, QFX5K Series, EX2300 Series, EX3400 Series, EX4300 Multigigabit, EX4600 Series; 19.2 versions prior to 19.2R1-S5, 19.2R2 on NFX250, QFX5K Series, EX2300 Series, EX3400 Series, EX4300 Multigigabit, EX4600 Series; 19.3 versions prior to 19.3R2-S3, 19.3R3 on NFX250, QFX5K Series, EX2300 Series, EX3400 Series, EX4300 Multigigabit, EX4600 Series; 19.4 versions prior to 19.4R1-S2, 19.4R2 on NFX250, NFX350, QFX5K Series, EX2300 Series, EX3400 Series, EX4300 Multigigabit, EX4600 Series. This issue does not affect Junos OS releases prior to 17.2R2..

CVSSv2.0 Score

Severity
Medium
Base Score
5/10
Exploit Score
10/10
Access Vector
Network
Access Complexity
Low
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
Partial
Integrity Impact
None

CVSSv3.1 Score

Severity
High
Base Score
7.5/10
Exploit Score
3.9/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
3.6/10
Confidentiality Impact
None
Availability Impact
High
Integrity Impact
None
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:juniper:junos:17.3:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r2-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r3-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r3-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r3:-:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r3-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r3-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r3-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r3-s6:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r2-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r2-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.3:r2-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r3-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s8:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r3-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s9:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s10:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s6:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s7:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r1-s6:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r1-s7:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r1-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r1-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:17.4:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:nfx250:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5130:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5200:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5210:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5220:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:o:juniper:junos:18.1:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r2-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r3-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r3-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r3-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r2-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r3-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r3-s6:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.1:r3-s8:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:juniper:ex2300:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex3400:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:nfx250:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5130:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5200:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5210:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5220:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:o:juniper:junos:18.2:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r2-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r1-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r2-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r2-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r1-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r1-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r1:-:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r2-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r2-s6:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r3-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r3-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r2-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r2-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r2-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:r1-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r2-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:juniper:ex2300:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex3400:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex4300:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:nfx250:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5130:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5200:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5210:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5220:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:juniper:ex2300:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex3400:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex4300:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:nfx250:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:nfx350:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5130:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5200:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5210:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:qfx5220:-:*:*:*:*:*:*:*
  No
-