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TI-2018-00053 Aliases CVE-2018-0056GHSA-3m6q-v5hr-w29h

MX Series: L2ALD daemon may crash if a duplicate MAC is learned by two different interfaces

Priority LOW 30CWE-20Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.00612 49th percentileScored 2026-11-07
Fix Fixed Junos OS (Juniper Networks): 15.1R7-S1, 16.1R4-S12, 16.1R6-S6 +8

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
JuniperJunos OS15.1 to before 15.1R7-S1; 16.1 to before 16.1R4-S12, 16.1R6-S6; 16.2 to before 16.2R2-S7; 17.1 to before 17.1R2-S9; 17.2 to before 17.2R1-S7, 17.2R2-S6; 17.3 to before 17.3R2-S4, 17.3R3-S1; 17.4 to before 17.4R1-S5; 18.1 to before 18.1R215.1R7-S1, 16.1R4-S12, 16.1R6-S6, 16.2R2-S7, 17.1R2-S9, 17.2R1-S7, 17.2R2-S6, 17.3R2-S4, 17.3R3-S1, 17.4R1-S5, 18.1R2Patch availableCNA
  • Junos OS VendorJuniper Affected 15.1 to before 15.1R7-S1; 16.1 to before 16.1R4-S12, 16.1R6-S6; 16.2 to before 16.2R2-S7; 17.1 to before 17.1R2-S9; 17.2 to before 17.2R1-S7, 17.2R2-S6; 17.3 to before 17.3R2-S4, 17.3R3-S1; 17.4 to before 17.4R1-S5; 18.1 to before 18.1R2 Fixed in 15.1R7-S1, 16.1R4-S12, 16.1R6-S6, 16.2R2-S7, 17.1R2-S9, 17.2R1-S7, 17.2R2-S6, 17.3R2-S4, 17.3R3-S1, 17.4R1-S5, 18.1R2 Patch available CNA

CPE configurations NVD · 27

CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:15.1:*:*:*:*:*:*:*15.1VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:f2:*:*:*:*:*:*15.1 f2VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:f3:*:*:*:*:*:*15.1 f3VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:f4:*:*:*:*:*:*15.1 f4VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:f5:*:*:*:*:*:*15.1 f5VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:f6:*:*:*:*:*:*15.1 f6VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:r1:*:*:*:*:*:*15.1 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:r2:*:*:*:*:*:*15.1 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:r3:*:*:*:*:*:*15.1 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:*15.1 r4VulnerableJuniper
  • cpe:2.3:o:juniper:junos:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:f2:*:*:*:*:*:* Versions 15.1 f2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:f3:*:*:*:*:*:* Versions 15.1 f3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:f4:*:*:*:*:*:* Versions 15.1 f4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:f5:*:*:*:*:*:* Versions 15.1 f5 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:f6:*:*:*:*:*:* Versions 15.1 f6 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:r1:*:*:*:*:*:* Versions 15.1 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:r2:*:*:*:*:*:* Versions 15.1 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:r3:*:*:*:*:*:* Versions 15.1 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:* Versions 15.1 r4 Vulnerable ·Juniper
Show 17 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:*15.1 r5VulnerableJuniper
cpe:2.3:o:juniper:junos:15.1:r6:*:*:*:*:*:*15.1 r6VulnerableJuniper
cpe:2.3:o:juniper:junos:16.1:*:*:*:*:*:*:*16.1VulnerableJuniper
cpe:2.3:o:juniper:junos:16.1:r1:*:*:*:*:*:*16.1 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:16.1:r2:*:*:*:*:*:*16.1 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:16.1:r3:*:*:*:*:*:*16.1 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:16.2:*:*:*:*:*:*:*16.2VulnerableJuniper
cpe:2.3:o:juniper:junos:16.2:r1:*:*:*:*:*:*16.2 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:17.1:*:*:*:*:*:*:*17.1VulnerableJuniper
cpe:2.3:o:juniper:junos:17.1:r1:*:*:*:*:*:*17.1 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:17.2:*:*:*:*:*:*:*17.2VulnerableJuniper
cpe:2.3:o:juniper:junos:17.3:*:*:*:*:*:*:*17.3VulnerableJuniper
cpe:2.3:o:juniper:junos:17.3:r1:*:*:*:*:*:*17.3 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:17.4:*:*:*:*:*:*:*17.4VulnerableJuniper
cpe:2.3:o:juniper:junos:17.4:r1:*:*:*:*:*:*17.4 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:18.1:*:*:*:*:*:*:*18.1VulnerableJuniper
cpe:2.3:o:juniper:junos:18.1:r1:*:*:*:*:*:*18.1 r1VulnerableJuniper
  • cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:* Versions 15.1 r5 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:15.1:r6:*:*:*:*:*:* Versions 15.1 r6 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:16.1:*:*:*:*:*:*:* Versions 16.1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:16.1:r1:*:*:*:*:*:* Versions 16.1 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:16.1:r2:*:*:*:*:*:* Versions 16.1 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:16.1:r3:*:*:*:*:*:* Versions 16.1 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:16.2:*:*:*:*:*:*:* Versions 16.2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:16.2:r1:*:*:*:*:*:* Versions 16.2 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:17.1:*:*:*:*:*:*:* Versions 17.1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:17.1:r1:*:*:*:*:*:* Versions 17.1 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:17.2:*:*:*:*:*:*:* Versions 17.2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:17.3:*:*:*:*:*:*:* Versions 17.3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:17.3:r1:*:*:*:*:*:* Versions 17.3 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:17.4:*:*:*:*:*:*:* Versions 17.4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:17.4:r1:*:*:*:*:*:* Versions 17.4 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:18.1:*:*:*:*:*:*:* Versions 18.1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:18.1:r1:*:*:*:*:*:* Versions 18.1 r1 Vulnerable ·Juniper

Remediation

  • Fix · CNA Junos OS (Juniper Networks) Fixed in 15.1R7-S1, 16.1R4-S12, 16.1R6-S6, 16.2R2-S7, 17.1R2-S9, 17.2R1-S7, 17.2R2-S6, 17.3R2-S4, 17.3R3-S1, 17.4R1-S5, 18.1R2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-0056
  2. 2026-10-03 Alias added: GHSA-3m6q-v5hr-w29h

References

Advisory 1

  • TI-2023-18638 Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01585 Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2025-15550 Junos OS: An local attacker with shell access can execute arbitrary code KEVCVSS 4.0MEDIUM 6.7
  • TI-2023-18644 Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files KEVCVSS 3.1MEDIUM 5.3
  • TI-2023-18640 Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files KEVCVSS 3.1MEDIUM 5.3
See all 792 →

Sources

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