Junos OS: jdhcpd daemon crash due to invalid IPv6 UDP packets

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Summary

CVECVE-2017-2348
StatePUBLISHED
Assignerjuniper
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-07-17 13:18:24 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionThe Juniper Enhanced jdhcpd daemon may experience high CPU utilization, or crash and restart upon receipt of an invalid IPv6 UDP packet. Both high CPU utilization and repeated crashes of the jdhcpd daemon can result in a denial of service as DHCP service is interrupted. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS 14.1X53 prior to 14.1X53-D12, 14.1X53-D38, 14.1X53-D40 on QFX, EX, QFabric System; 15.1 prior to 15.1F2-S18, 15.1R4 on all products and platforms; 15.1X49 prior to 15.1X49-D80 on SRX; 15.1X53 prior to 15.1X53-D51, 15.1X53-D60 on NFX, QFX, EX.

Risk And Classification

Primary CVSS: v3.0 7.5 HIGH from [email protected]

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

Problem Types: CWE-400 | Denial of service

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.0[email protected]Secondary7.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.0CNADECLARED7.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Juniper Junos 14.1x53 All All All
Operating System Juniper Junos 14.1x53 d10 All All
Operating System Juniper Junos 14.1x53 d38 All All
Operating System Juniper Junos 14.1x53 d40 All All
Operating System Juniper Junos 15.1 All All All
Operating System Juniper Junos 15.1 f1 All All
Operating System Juniper Junos 15.1 f2 All All
Operating System Juniper Junos 15.1 f2-s1 All All
Operating System Juniper Junos 15.1 f2-s2 All All
Operating System Juniper Junos 15.1 f2-s3 All All
Operating System Juniper Junos 15.1 f2-s4 All All
Operating System Juniper Junos 15.1 r4 All All
Operating System Juniper Junos 15.1x49 All All All
Operating System Juniper Junos 15.1x49 d10 All All
Operating System Juniper Junos 15.1x49 d20 All All
Operating System Juniper Junos 15.1x49 d30 All All
Operating System Juniper Junos 15.1x49 d35 All All
Operating System Juniper Junos 15.1x49 d40 All All
Operating System Juniper Junos 15.1x49 d45 All All
Operating System Juniper Junos 15.1x49 d50 All All
Operating System Juniper Junos 15.1x49 d55 All All
Operating System Juniper Junos 15.1x49 d60 All All
Operating System Juniper Junos 15.1x49 d65 All All
Operating System Juniper Junos 15.1x49 d70 All All
Operating System Juniper Junos 15.1x49 d75 All All
Operating System Juniper Junos 15.1x53 All All All
Operating System Juniper Junos 15.1x53 d10 All All
Operating System Juniper Junos 15.1x53 d20 All All
Operating System Juniper Junos 15.1x53 d21 All All
Operating System Juniper Junos 15.1x53 d25 All All
Operating System Juniper Junos 15.1x53 d30 All All
Operating System Juniper Junos 15.1x53 d32 All All
Operating System Juniper Junos 15.1x53 d33 All All
Operating System Juniper Junos 15.1x53 d34 All All
Operating System Juniper Junos 15.1x53 d47 All All
Operating System Juniper Junos 15.1x53 d48 All All
Operating System Juniper Junos 15.1x53 d60 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Juniper Networks Junos OS affected 14.1X53 prior to 14.1X53-D12, 14.1X53-D38, 14.1X53-D40 QFX, EX, QFabric System
CNA Juniper Networks Junos OS affected 15.1 prior to 15.1F2-S18, 15.1R4 all products and platforms
CNA Juniper Networks Junos OS affected 15.1X49 prior to 15.1X49-D80 SRX
CNA Juniper Networks Junos OS affected 15.1X53 prior to 15.1X53-D51, 15.1X53-D60 NFX, QFX, EX

References

ReferenceSourceLinkTags
Juniper Junos IPv6 UDP Packet Processing Bug Lets Remote Users Consume Excessive CPU Resources on the Target System or Cause the jdhcpd Service to Crash - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
2017-07 Security Bulletin: Junos OS: jdhcpd daemon crash due to invalid IPv6 UDP packets (CVE-2017-2348) - Juniper Networks af854a3a-2127-422b-91ae-364da2661108 kb.juniper.net Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Workarounds

CNA: Devices that have the ability to transition from Juniper's Enhanced DHCP server, JDHCPD, to the legacy DHCP server, DHCPD, can move back to legacy. Devices that do not support the ability to transition from Enhanced DHCP to Legacy DHCP do not have a workaround available unless customers decide to disable the DHCP services and forward DHCP client requests to other DHCP servers or discontinue the use of DHCP services.

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