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CVE-2019-0043

Junos OS: RPD process crashes upon receipt of a specific SNMP packet

High7.5EPSS 1.3%
Published
Updated
Reserved
Assigned by
juniper

Description

In MPLS environments, receipt of a specific SNMP packet may cause the routing protocol daemon (RPD) process to crash and restart. By continuously sending a specially crafted SNMP packet, an attacker can repetitively crash the RPD process causing prolonged denial of service. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS : 12.1X46 versions prior to 12.1X46-D77 on SRX Series; 12.3 versions prior to 12.3R12-S10; 12.3X48 versions prior to 12.3X48-D75 on SRX Series; 14.1X53 versions prior to 14.1X53-D48 on EX/QFX series; 15.1 versions prior to 15.1R4-S9, 15.1R7-S2; 15.1F6 versions prior to 15.1F6-S11; 15.1X49 versions prior to 15.1X49-D141, 15.1X49-D144, 15.1X49-D150 on SRX Series; 15.1X53 versions prior to 15.1X53-D234 on QFX5200/QFX5110 Series; 15.1X53 versions prior to 15.1X53-D68 on QFX10K Series; 15.1X53 versions prior to 15.1X53-D471, 15.1X53-D490 on NFX Series; 15.1X53 versions prior to 15.1X53-D590 on EX2300/EX3400 Series; 15.1X54 on ACX Series; 16.1 versions prior to 16.1R3-S10, 16.1R4-S11, 16.1R6-S5, 16.1R7; 16.1X65 versions prior to 16.1X65-D48; 16.2 versions prior to 16.2R2-S6; 17.1 versions prior to 17.1R2-S8, 17.1R3; 17.2 versions prior to 17.2R1-S7, 17.2R3; 17.2X75 versions prior to 17.2X75-D92, 17.2X75-D102, 17.2X75-D110; 17.3 versions prior to 17.3R3; 17.4 versions prior to 17.4R1-S4, 17.4R2; 18.1 versions prior to 18.1R1-S1, 18.1R2-S1, 18.1R3; 18.2X75 versions prior to 18.2X75-D10.

Scores

CVSS scores of CVE-2019-0043, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.0High7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
1.3% · top 29% of all CVEs (6 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • affected 12.1X46 – < 12.1X46-D77
    • affected 12.3X48 – < 12.3X48-D75
    • affected 15.1X49 – < 15.1X49-D141, 15.1X49-D144, 15.1X49-D150

  • Juniper Networks · Junos OS

    • affected 12.3 – < 12.3R12-S10
    • affected 15.1 – < 15.1R4-S9, 15.1R7-S2
    • affected 15.1F6 – < 15.1F6-S11
    • affected 16.1 – < 16.1R3-S10, 16.1R4-S11, 16.1R6-S5, 16.1R7
    • affected 16.1X65 – < 16.1X65-D48
    • affected 16.2 – < 16.2R2-S6
    • affected 17.1 – < 17.1R2-S8, 17.1R3
    • affected 17.2 – < 17.2R1-S7, 17.2R3
    • affected 17.2X75 – < 17.2X75-D92, 17.2X75-D102, 17.2X75-D110
    • affected 17.3 – < 17.3R3
    • affected 17.4 – < 17.4R1-S4, 17.4R2
    • affected 18.1 – < 18.1R1-S1, 18.1R2-S1, 18.1R3
    • affected 18.2X75 – < 18.2X75-D10

  • Juniper Networks · Junos OS

    • affected 14.1X53 – < 14.1X53-D48

  • Juniper Networks · Junos OS

    • affected 15.1X53 – < 15.1X53-D234

  • Juniper Networks · Junos OS

    • affected 15.1X53 – < 15.1X53-D68

  • Juniper Networks · Junos OS

    • affected 15.1X53 – < 15.1X53-D471

  • Juniper Networks · Junos OS

    • affected 15.1X53 – < 15.1X53-D590

  • Juniper Networks · Junos OS

    • affected 15.1X54

What to do

Solution: The following software releases have been updated to resolve this specific issue: 12.1X46-D77, 12.3R12-S10, 12.3X48-D75, 14.1X53-D48, 15.1F6-S11, 15.1R4-S9, 15.1R7-S2, 15.1X49-D141, 15.1X49-D144, 15.1X49-D150, 15.1X53-D234, 15.1X53-D471, 15.1X53-D590, 15.1X53-D68, 16.1R3-S10, 16.1R4-S11, 16.1R6-S5, 16.1R7, 16.1X65-D48, 16.2R2-S6, 17.1R2-S8, 17.1R3, 17.2R1-S7, 17.2R3, 17.2X75-D102, 17.2X75-D110, 17.2X75-D92, 17.3R3, 17.4R1-S4, 17.4R2, 18.1R1-S1, 18.1R2-S1, 18.1R3, 18.2R1, 18.2X75-D10, 18.3R1, and all subsequent releases.

Workaround: Disable SNMP (disabled by default), utilize edge filtering with source-address validation (uRPF, etc.), access control lists (ACLs), and/or SNMPv3 authentication to limit access to the device only from trusted hosts.

Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .