CVE-2019-0048

Description

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.

Risk Information

Base Score

5.8

MODERATE

Vector

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

EPSS Score

Exploitation Probability

0.208

Associated Vulnerability

Vulnerability	OS Platform
Multiple Vulnerabilities are fixed in junos 14.1X53-D51	NCM
Multiple Vulnerabilities are fixed in junos 17.1R3	NCM
Vulnerabilities CVE-2019-0048,CVE-2019-0063,CVE-2020-1600 are fixed in junos 17.2r3-s2	NCM
Multiple Vulnerabilities are fixed in junos 17.3r3-s3	NCM
Vulnerabilities CVE-2019-0048,CVE-2019-0063,CVE-2019-0068,CVE-2020-1603 are fixed in junos 17.4r2-s5	NCM
Multiple Vulnerabilities are fixed in junos 18.1R3-S1	NCM
Multiple Vulnerabilities are fixed in junos 18.2r2	NCM
Multiple Vulnerabilities are fixed in junos 18.3R2	NCM
Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2019-0048)	NCM

Patch Details

Click to see the patches provided by ManageEngine for this CVE

Patch ID	Patch Description
PATCH-1704488	Security Update for junos 9.2r1
PATCH-1704488	Security Update for junos 9.2r1
PATCH-1704488	Security Update for junos 9.2r1
PATCH-1704488	Security Update for junos 9.2r1
PATCH-1704488	Security Update for junos 9.2r1
PATCH-1704488	Security Update for junos 9.2r1
PATCH-1704488	Security Update for junos 9.2r1
PATCH-1704488	Security Update for junos 9.2r1

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234