Junos OS: authd allows assignment of IP address requested by DHCP subscriber logging in with Option 50 (Requested IP Address) (Juniper Networks Junos OS)

CVE-2018-0057

MEDIUM 6.1

At a glance

Source: NVD
EPSS: EPSS 1.15 % · percentile 67 (2026-10-30)
State: PUBLISHED
Published: 2018-10-10 18:00 UTC
Updated: 2024-09-17 02:10 UTC
Assigner: juniper
NVD status: Modified

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Description

On MX Series and M120/M320 platforms configured in a Broadband Edge (BBE) environment, subscribers logging in with DHCP Option 50 to request a specific IP address will be assigned the requested IP address, even if there is a static MAC to IP address binding in the access profile. In the problem scenario, with a hardware-address and IP address configured under address-assignment pool, if a subscriber logging in with DHCP Option 50, the subscriber will not be assigned an available address from the matched pool, but will still get the requested IP address. A malicious DHCP subscriber may be able to utilize this vulnerability to create duplicate IP address assignments, leading to a denial of service for valid subscribers or unauthorized information disclosure via IP address assignment spoofing. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S2, 15.1R8; 16.1 versions prior to 16.1R4-S12, 16.1R7-S2, 16.1R8; 16.2 versions prior to 16.2R2-S7, 16.2R3; 17.1 versions prior to 17.1R2-S9, 17.1R3; 17.2 versions prior to 17.2R1-S7, 17.2R2-S6, 17.2R3; 17.3 versions prior to 17.3R2-S4, 17.3R3; 17.4 versions prior to 17.4R2; 18.1 versions prior to 18.1R2-S3, 18.1R3.

References

https://kb.juniper.net/JSA10892

Scores

Version	Score	Vector	Scored by
CVSS 3.0	MEDIUM 6.1	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L	juniper
CVSS 3.0	MEDIUM 6.1	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L	NVD · sirt@juniper.net (Secondary)
CVSS 3.0	CRITICAL 9.6	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 2.0	MEDIUM 5.5	AV:N/AC:L/Au:S/C:P/I:N/A:P	NVD · nvd@nist.gov (Primary)

European references

ENISA EUVD · EUVD-2018-0881
GCVE · GCVE-0-2018-0057

CERT-FR advisories

CERTFR-2018-AVI-487 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:juniper:junos:15.1:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:f2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:f3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:f4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:f5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:f6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.4:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.1:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.1:r1:*:*:*:*:*:*

Affected products

Product	Versions
Juniper Networks · Junos OS	affected 15.1 < 15.1R7-S2, 15.1R8 ; affected 16.1 < 16.1R4-S12, 16.1R7-S2, 16.1R8 ; affected 16.2 < 16.2R2-S7, 16.2R3 ; affected 17.1 < 17.1R2-S9, 17.1R3 ; affected 17.2 < 17.2R1-S7, 17.2R2-S6, 17.2R3 ; affected 17.3 < 17.3R2-S4, 17.3R3

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD

🟡 Junos OS: authd allows assignment of IP address requested by DHCP subscriber logging in with Option 50 (Requested IP Address) (Juniper Networks Junos OS)