Description

When an attacker sends a specific crafted Ethernet Operation, Administration, and Maintenance (Ethernet OAM) packet to a target device, it may improperly handle the incoming malformed data and fail to sanitize this incoming data resulting in an overflow condition. This overflow condition in Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) condition by coring the CFM daemon. Continued receipt of these packets may cause an extended Denial of Service condition. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S15; 12.3X48 versions prior to 12.3X48-D95 on SRX Series; 14.1X50 versions prior to 14.1X50-D145; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1R2; 15.1X49 versions prior to 15.1X49-D170 on SRX Series; 15.1X53 versions prior to 15.1X53-D67.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

CNA:  Juniper Networks, Inc.

Base Score:  7.5 HIGH

Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: The NVD and the CNA have provided the same score. When this occurs only the CNA information is displayed, but the Acceptance Level icon for the CNA is given a checkmark to signify NVD concurrence.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score:  5.0 MEDIUM

Vector:  (AV:N/AC:L/Au:N/C:N/I:N/A:P)

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://kb.juniper.net/	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-755	Improper Handling of Exceptional Conditions	NIST
CWE-703	Improper Check or Handling of Exceptional Conditions	Juniper Networks, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Reanalysis by NIST 10/21/2022 3:48:02 PM

Action	Type	Old Value	New Value

Initial Analysis by NIST 4/13/2020 4:02:17 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 6625 characters. View Entire Change Record OR *cpe:2.3:o:juniper:junos:12.3:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:12.3:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:12.3:r10:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:12.3:r10-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:12.3:r10-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:12.3:r11:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:12.3:r12:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:12.3:r12-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:12.3:r12-s11:*:*:*:*:*:* *cpe:2.3:o:juniper:juno
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CWE		NIST CWE-755
Changed	Reference Type	https://kb.juniper.net/ No Types Assigned	https://kb.juniper.net/ Vendor Advisory