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CVE-2020-1656 Detail

Description

The DHCPv6 Relay-Agent service, part of the Juniper Enhanced jdhcpd daemon shipped with Juniper Networks Junos OS has an Improper Input Validation vulnerability which will result in a Denial of Service (DoS) condition when a DHCPv6 client sends a specific DHPCv6 message allowing an attacker to potentially perform a Remote Code Execution (RCE) attack on the target device. Continuous receipt of the specific DHCPv6 client message will result in an extended Denial of Service (DoS) condition. If adjacent devices are also configured to relay DHCP packets, and are not affected by this issue and simply transparently forward unprocessed client DHCPv6 messages, then the attack vector can be a Network-based attack, instead of an Adjacent-device attack. No other DHCP services are affected. Receipt of the packet without configuration of the DHCPv6 Relay-Agent service, will not result in exploitability of this issue. This issue affects Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S15; 12.3X48 versions prior to 12.3X48-D95; 14.1X53 versions prior to 14.1X53-D53; 15.1 versions prior to 15.1R7-S6; 15.1X49 versions prior to 15.1X49-D200; 15.1X53 versions prior to 15.1X53-D593; 16.1 versions prior to 16.1R7-S7; 16.2 versions prior to 16.2R2-S11; 17.1 versions prior to 17.1R2-S11, 17.1R3-S2; 17.2 versions prior to 17.2R3-S3; 17.2X75 versions prior to 17.2X75-D44; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R2-S9, 17.4R3; 18.1 versions prior to 18.1R3-S9; 18.2 versions prior to 18.2R2-S6, 18.2R3-S2; 18.2X75 versions prior to 18.2X75-D12, 18.2X75-D33, 18.2X75-D435, 18.2X75-D60; 18.3 versions prior to 18.3R1-S7, 18.3R2-S3, 18.3R3-S1; 18.4 versions prior to 18.4R1-S5, 18.4R2-S3, 18.4R3; 19.1 versions prior to 19.1R1-S4, 19.1R2; 19.2 versions prior to 19.2R1-S3, 19.2R2; 19.3 versions prior to 19.3R2.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://kb.juniper.net/JSA11049 Vendor Advisory 
https://kb.juniper.net/JSA11049 Vendor Advisory 
https://www.juniper.net/documentation/en_US/junos/topics/reference/command-summary/show-dhcpv6-relay-statistics.html Vendor Advisory 
https://www.juniper.net/documentation/en_US/junos/topics/reference/command-summary/show-dhcpv6-relay-statistics.html Vendor Advisory 
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/dhcp-relay-agent-security-devices.html Vendor Advisory 
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/dhcp-relay-agent-security-devices.html Vendor Advisory 
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/dhcpv6-relay-agent-overview.html Vendor Advisory 
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/dhcpv6-relay-agent-overview.html Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST   Juniper Networks, Inc.  
CWE-476 NULL Pointer Dereference Juniper Networks, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

7 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-1656
NVD Published Date:
10/16/2020
NVD Last Modified:
11/21/2024
Source:
Juniper Networks, Inc.