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CVE-2021-0216

CVE information

Published

1 year ago

Last Modified

4 months ago

CVSSv2.0 Severity

Low

CVSSv3.1 Severity

Medium

Impact Analysis

Description

A vulnerability in Juniper Networks Junos OS running on the ACX5448 and ACX710 platforms may cause BFD sessions to flap when a high rate of transit ARP packets are received. This, in turn, may impact routing protocols and network stability, leading to a Denial of Service (DoS) condition. When a high rate of transit ARP packets are exceptioned to the CPU and BFD flaps, the following log messages may be seen: bfdd[15864]: BFDD_STATE_UP_TO_DOWN: BFD Session 192.168.14.3 (IFL 232) state Up -> Down LD/RD(17/19) Up time:11:38:17 Local diag: CtlExpire Remote diag: None Reason: Detect Timer Expiry. bfdd[15864]: BFDD_TRAP_SHOP_STATE_DOWN: local discriminator: 17, new state: down, interface: irb.998, peer addr: 192.168.14.3 rpd[15839]: RPD_ISIS_ADJDOWN: IS-IS lost L2 adjacency to peer on irb.998, reason: BFD Session Down bfdd[15864]: BFDD_TRAP_SHOP_STATE_UP: local discriminator: 17, new state: up, interface: irb.998, peer addr: 192.168.14.3 This issue only affects the ACX5448 Series and ACX710 Series routers. No other products or platforms are affected by this vulnerability. This issue affects Juniper Networks Junos OS: 18.2 versions prior to 18.2R3-S8 on ACX5448; 18.3 versions prior to 18.3R3-S5 on ACX5448; 18.4 versions prior to 18.4R1-S6, 18.4R3-S7 on ACX5448; 19.1 versions prior to 19.1R3-S5 on ACX5448; 19.2 versions prior to 19.2R2, 19.2R3 on ACX5448; 19.3 versions prior to 19.3R3 on ACX5448; 19.4 versions prior to 19.4R3 on ACX5448; 20.1 versions prior to 20.1R2 on ACX5448; 20.2 versions prior to 20.2R2 on ACX5448 and ACX710..

CVSSv2.0 Score

Severity
Low
Base Score
3.3/10
Exploit Score
6.5/10
Access Vector
Adjacent_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
Medium
Base Score
6.5/10
Exploit Score
2.8/10
Access Vector
Adjacent_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:20.2:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:juniper:acx5448:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:acx710:-:*:*:*:*:*:*:*
  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:18.3: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:18.2:r1:-:*:*:*:*:*
  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:r2-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r2-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s4:*:*:*:*:*:*
  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:r1-s2:*:*:*:*:*:*
  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:19.1:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*
  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:*:*:*:*:*:*
  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:18.2:r3-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r3-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:*
  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:r2-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r3-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r3-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:*
  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-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:*
  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:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r2-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r2-s7:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r3-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r3-s6:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.2:r3-s7:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r2-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r3-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r3-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.3:r3-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r3-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r3-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r3-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r3-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:18.4:r3-s6:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r3-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r3-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r3-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.1:r3-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.2:r1-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r2-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r2-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.3:r2-s5:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:juniper:acx5448:-:*:*:*:*:*:*:*
  No
-