CVE-2018-0057 Information

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.

CVSS Vector

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

Reference

https://kb.juniper.net/JSA10892

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

9.6