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CVE-2021-0244

CVE information

Published

1 year ago

Last Modified

1 year ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

High

Impact Analysis

Description

A signal handler race condition exists in the Layer 2 Address Learning Daemon (L2ALD) of Juniper Networks Junos OS due to the absence of a specific protection mechanism to avoid a race condition which may allow an attacker to bypass the storm-control feature on devices. This issue is a corner case and only occurs during specific actions taken by an administrator of a device under certain specifics actions which triggers the event. The event occurs less frequently on devices which are not configured with Virtual Chassis configurations, and more frequently on devices configured in Virtual Chassis configurations. This issue is not specific to any particular Junos OS platform. An Indicator of Compromise (IoC) may be seen by reviewing log files for the following error message seen by executing the following show statement: show log messages | grep storm Result to look for: /kernel: GENCFG: op 58 (Storm Control Blob) failed; err 1 (Unknown) This issue affects: Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D49 on EX Series; 15.1 versions prior to 15.1R7-S6; 15.1X49 versions prior to 15.1X49-D191, 15.1X49-D200 on SRX Series; 16.1 versions prior to 16.1R7-S7; 16.2 versions prior to 16.2R2-S11, 16.2R3; 17.1 versions prior to 17.1R2-S11, 17.1R3; 17.2 versions prior to 17.2R2-S8, 17.2R3-S3; 17.3 versions prior to 17.3R2-S5, 17.3R3-S7; 17.4 versions prior to 17.4R2-S9, 17.4R3; 18.1 versions prior to 18.1R3-S5; 18.2 versions prior to 18.2R2-S6, 18.2R3; 18.3 versions prior to 18.3R1-S7, 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R1-S5, 18.4R2; 19.1 versions prior to 19.1R1-S4, 19.1R2..

CVSSv2.0 Score

Severity
Medium
Base Score
4.3/10
Exploit Score
8.6/10
Access Vector
Network
Access Complexity
Medium
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
Partial
Integrity Impact
None

CVSSv3.1 Score

Severity
High
Base Score
7.4/10
Exploit Score
2.8/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
4/10
Confidentiality Impact
None
Availability Impact
High
Integrity Impact
None
Scope
Changed
User Interaction
Required

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:juniper:junos:14.1x53:d45:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d15:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d35:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d10:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d40:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d30:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d42:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d25:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d27:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d16:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d20:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d26:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d34:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d38:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d43:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d44:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d46:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d47:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:14.1x53:d48:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:juniper:ex4300:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex2300:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex2300-c:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex3400:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex9200:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex4650:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex9250:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:ex4400:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:o:juniper:junos:15.1x49:d50:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d30:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d70:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d80:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d110:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d60:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d100:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d35:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d45:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:-:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d10:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d120:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d130:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d131:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d140:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d15:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d150:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d160:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d170:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d180:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d20:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d25:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d40:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d55:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d65:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d75:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d90:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:juniper:junos:15.1x49:d190:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx1500:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx300:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx550:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx320:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx340:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx345:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx380:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:*
  No
-