On EX4300 Series switches with TCAM optimization enabled, incoming multicast traffic matches an implicit loopback filter rule first, since it has high priority. This rule is meant for reserved multicast addresses 224.0.0.x, but incorrectly matches on 224.x.x.x. Due to this bug, when a firewall filter is applied on the loopback interface, other firewall filters might stop working for multicast traffic. The command 'show firewall filter' can be used to confirm whether the filter is working. This issue only affects the EX4300 switch. No other products or platforms are affected by this vulnerability. This issue affects: Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D51, 14.1X53-D115 on EX4300 Series; 17.1 versions prior to 17.1R3 on EX4300 Series; 17.2 versions prior to 17.2R3-S2 on EX4300 Series; 17.3 versions prior to 17.3R3-S3 on EX4300 Series; 17.4 versions prior to 17.4R2-S5, 17.4R3 on EX4300 Series; 18.1 versions prior to 18.1R3-S1 on EX4300 Series; 18.2 versions prior to 18.2R2 on EX4300 Series; 18.3 versions prior to 18.3R2 on EX4300 Series.
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact Low
Availability Impact None
User Interaction None
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact Low
Availability Impact None
User Interaction None
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
AV:N/AC:L/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
Key SSVC decision points have not yet been added.
Affected Vendors & Products
Vendors | Products |
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Juniper |
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Configuration 1 [-]
AND |
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Configuration 2 [-]
AND |
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Configuration 3 [-]
AND |
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Configuration 4 [-]
AND |
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Configuration 5 [-]
AND |
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Configuration 6 [-]
AND |
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Configuration 7 [-]
AND |
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Configuration 8 [-]
AND |
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No data.
References
Link | Providers |
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https://kb.juniper.net/JSA10942 |
History
No history.
MITRE
Status: PUBLISHED
Assigner: juniper
Published: 2019-07-11T19:40:52.200977Z
Updated: 2024-09-17T00:01:16.400Z
Reserved: 2018-10-11T00:00:00
Link: CVE-2019-0048
Vulnrichment
No data.
NVD
Status : Modified
Published: 2019-07-11T20:15:11.257
Modified: 2024-11-21T04:16:07.733
Link: CVE-2019-0048
Redhat
No data.