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CVE-2017-2345

Junos: snmpd denial of service upon receipt of crafted SNMP packet

Critical9.8EPSS 3.6%
Published
Updated
Reserved
Assigned by
juniper

Description

On Junos OS devices with SNMP enabled, a network based attacker with unfiltered access to the RE can cause the Junos OS snmpd daemon to crash and restart by sending a crafted SNMP packet. Repeated crashes of the snmpd daemon can result in a partial denial of service condition. Additionally, it may be possible to craft a malicious SNMP packet in a way that can result in remote code execution. SNMP is disabled in Junos OS by default. Junos OS devices with SNMP disabled are not affected by this issue. No other Juniper Networks products or platforms are affected by this issue. NOTE: This is a different issue than Cisco CVE-2017-6736, CVE-2017-6737, and CVE-2017-6738. Affected releases are Juniper Networks Junos OS 12.1X46 prior to 12.1X46-D67; 12.3X48 prior to 12.3X48-D51, 12.3X48-D55; 13.3 prior to 13.3R10-S2; 14.1 prior to 14.1R2-S10, 14.1R8-S4, 14.1R9; 14.1X50 prior to 14.1X50-D185; 14.1X53 prior to 14.1X53-D122, 14.1X53-D44, 14.1X53-D50; 14.2 prior to 14.2R4-S9, 14.2R7-S7, 14.2R8; 15.1 prior to 15.1F2-S18, 15.1F6-S7, 15.1R4-S8, 15.1R5-S5, 15.1R6-S1, 15.1R7; 15.1X49 prior to 15.1X49-D100, 15.1X49-D110; 15.1X53 prior to 15.1X53-D231, 15.1X53-D47, 15.1X53-D48, 15.1X53-D57, 15.1X53-D64, 15.1X53-D70; 16.1 prior to 16.1R3-S4, 16.1R4-S3, 16.1R4-S4, 16.1R5; 16.2 prior to 16.2R2, 16.2R3; 17.1 prior to 17.1R1-S3, 17.1R2, 17.1R3; 17.2 prior to 17.2R1-S1, 17.2R2; 17.2X75 prior to 17.2X75-D30. Junos releases prior to 10.2 are not affected.

Scores

CVSS scores of CVE-2017-2345, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.0Critical9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.0Critical9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
3.6% · top 10% of all CVEs (2 Nov 2026)

Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • affected Junos releases prior to 10.2 are not affected

  • Juniper Networks · Junos OS

    • affected 12.1X46 prior to 12.1X46-D67
    • affected 12.3X48 prior to 12.3X48-D51, 12.3X48-D55
    • affected 13.3 prior to 13.3R10-S2
    • affected 14.1 prior to 14.1R2-S10, 14.1R8-S4, 14.1R9
    • affected 14.1X50 prior to 14.1X50-D185
    • affected 14.1X53 prior to 14.1X53-D122, 14.1X53-D44, 14.1X53-D50
    • affected 14.2 prior to 14.2R4-S9, 14.2R7-S7, 14.2R8
    • affected 15.1 prior to 15.1F2-S18, 15.1F6-S7, 15.1R4-S8, 15.1R5-S5, 15.1R6-S1, 15.1R7
    • affected 15.1X49 prior to 15.1X49-D100
    • affected 15.1X53 prior to 15.1X53-D231, 15.1X53-D47, 15.1X53-D48, 15.1X53-D57, 15.1X53-D64, 15.1X53-D70
    • affected 16.1 prior to 16.1R3-S4, 16.1R4-S3, 16.1R4-S4, 16.1R5
    • affected 16.2 prior to 16.2R2
    • affected 17.1 prior to 17.1R1-S3, 17.1R2
    • affected 17.2 prior to 17.2R1-S1, 17.2R2
    • affected 17.2X75 prior to 17.2X75-D30

What to do

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

References (3)

Sources

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

Record last updated .