CVE-2017-2348
Junos OS: jdhcpd daemon crash due to invalid IPv6 UDP packets
- Published
- Updated
- Reserved
- Assigned by
- juniper
Description
The 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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| juniperCNA (assigner) | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.3% · top 30% of all CVEs (3 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- Denial of service
- CWE-400 (opens in a new tab)All about CWE-400 and its CVEs
Affected products
- affected 14.1X53 prior to 14.1X53-D12, 14.1X53-D38, 14.1X53-D40
- affected 15.1 prior to 15.1F2-S18, 15.1R4
- affected 15.1X49 prior to 15.1X49-D80
- affected 15.1X53 prior to 15.1X53-D51, 15.1X53-D60
What to do
Workaround: 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.
References (2)
- https://kb.juniper.net/JSA10800 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1038899 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2017-2348)Record last updated .