Support Support Downloads Knowledge Base Apex Support Portal Community

Knowledge Base

Search our Knowledge Base sites to find answers to your questions.

Ask All Knowledge Base Sites All Knowledge Base Sites JunosE Defect (KA)Knowledge BaseSecurity AdvisoriesTechnical BulletinsTechnotes Sign in to display secure content and recently viewed articles

2021-01 Security Bulletin: Junos OS: EX Series, QFX Series, MX Series, SRX Branch Series: Memory leak in packet forwarding engine due to 802.1X authenticator port interface flaps (CVE-2021-0215)

0

0

Article ID: JSA11105 SECURITY_ADVISORIES Last Updated: 16 Mar 2021Version: 3.0
Product Affected:
This issue affects Junos OS 14.1X53, 15.1X49, 15.1X53, 16.1, 17.2, 17.3, 17.4, 18.1, 18.2, 18.3, 18.4, 19.1, 19.2, 19.3, 19.4. Affected platforms: EX Series, QFX Series, MX Series, SRX Branch Series.
Problem:

On Juniper Networks Junos EX series, QFX Series, MX Series, and SRX branch series devices, a memory leak occurs every time the 802.1X authenticator port interface flaps which can lead to other processes, such as the pfex process, responsible for packet forwarding, to crash and restart.

An administrator can use the following CLI command to monitor the status of memory consumption:

user@device> show task memory detail

Please refer to https://kb.juniper.net/KB31522 for details.

This issue affects Juniper Networks Junos OS:

14.1X53 versions prior to 14.1X53-D54;

15.1X49 versions prior to 15.1X49-D240 ;

15.1X53 versions prior to 15.1X53-D593;

16.1 versions prior to 16.1R7-S8;

17.2 versions prior to 17.2R3-S4;

17.3 versions prior to 17.3R3-S8;

17.4 versions prior to 17.4R2-S11, 17.4R3-S2;

18.1 versions prior to 18.1R3-S10 ;

18.2 versions prior to 18.2R2-S7, 18.2R3-S3;

18.3 versions prior to 18.3R2-S4, 18.3R3-S2;

18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S2;

19.1 versions prior to 19.1R1-S5, 19.1R2-S2, 19.1R3;

19.2 versions prior to 19.2R1-S5, 19.2R2;

19.3 versions prior to 19.3R2-S3, 19.3R3;

19.4 versions prior to 19.4R1-S2, 19.4R2.

This issue does not affect Juniper Networks Junos OS 12.3, 15.1.
 

This issue may occur when the device is configured as 802.1X authenticator port and the interface flaps.

Minimum configuration stanza required related to this issue is the following:

[dot1x]

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was seen during production usage.

This issue has been assigned CVE-2021-0215.

Solution:

The following software releases have been updated to resolve this specific issue: 14.1X53-D54, 15.1X49-D240, 15.1X53-D593, 16.1R7-S8, 17.2R3-S4, 17.3R3-S8, 17.4R2-S11, 17.4R3-S2, 18.1R3-S10, 18.2R2-S7, 18.2R3-S3, 18.3R2-S4, 18.3R3-S2, 18.4R1-S7, 18.4R2-S4, 18.4R3-S2, 19.1R1-S5, 19.1R2-S2, 19.1R3, 19.2R1-S5, 19.2R2, 19.3R2-S3, 19.3R3, 19.4R1-S2, 19.4R2, 20.1R1, and all subsequent releases.

This issue is being tracked as 1480706.

Workaround:

There are no viable workarounds for this issue.

Implementation:
Software releases or updates are available for download at https://www.juniper.net/support/downloads/.
Modification History:
2021-01-13: Initial Publication.
2021-03-02: MX series added to affected products.
 
CVSS Score:
6.5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Severity Level:
Medium
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

Related Links

Comment on this article > Affected Products Browse the Knowledge Base for more articles related to these product categories. Select a category to begin.

Getting Up and Running with Junos

Getting Up and Running with Junos Security Alerts and Vulnerabilities Product Alerts and Software Release Notices Problem Report (PR) Search Tool EOL Notices and Bulletins JTAC User Guide Customer Care User Guide Pathfinder SRX High Availability Configurator SRX VPN Configurator Training Courses and Videos End User Licence Agreement Global Search