CVE-2018-0056

Description

If a duplicate MAC address is learned by two different interfaces on an MX Series device, the MAC address learning function correctly flaps between the interfaces. However, the Layer 2 Address Learning Daemon (L2ALD) daemon might crash when attempting to delete the duplicate MAC address when the particular entry is not found in the internal MAC address table. This issue only occurs on MX Series devices with l2-backhaul VPN configured. No other products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S1 on MX Series; 16.1 versions prior to 16.1R4-S12, 16.1R6-S6 on MX Series; 16.2 versions prior to 16.2R2-S7 on MX Series; 17.1 versions prior to 17.1R2-S9 on MX Series; 17.2 versions prior to 17.2R1-S7, 17.2R2-S6 on MX Series; 17.3 versions prior to 17.3R2-S4, 17.3R3-S1 on MX Series; 17.4 versions prior to 17.4R1-S5 on MX Series; 18.1 versions prior to 18.1R2 on MX Series.

Risk Information

Base Score

5.3

MODERATE

Vector

CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Score

Exploitation Probability

0.167

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2018-0056 are fixed in junos 15.1r7-s1	NCM
Vulnerabilities CVE-2018-0049,CVE-2018-0056,CVE-2018-0057,CVE-2018-0061 are fixed in junos 16.1r4-s12	NCM
Multiple Vulnerabilities are fixed in junos 16.2r2-s7	NCM
Multiple Vulnerabilities are fixed in junos 17.1r2-s9	NCM
Multiple Vulnerabilities are fixed in junos 17.2r1-s7	NCM
Multiple Vulnerabilities are fixed in junos 17.3r2-s4	NCM
Multiple Vulnerabilities are fixed in junos 17.4r1-s5	NCM
Multiple Vulnerabilities are fixed in junos 18.1r2	NCM
Improper Input Validation Vulnerability (CVE-2018-0056)	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