Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
Unknown
Privileges Required
Unknown
Attack Vector
Unknown
0

CVE-2020-1656

Disclosure Date: October 14, 2020 •
CVE-2020-1656
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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.

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CVSS V3 Severity and Metrics
Base Score:
None
Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
Unknown
Attack Vector (AV):
Unknown
Attack Complexity (AC):
Unknown
Privileges Required (PR):
Unknown
User Interaction (UI):
Unknown
Scope (S):
Unknown
Confidentiality (C):
Unknown
Integrity (I):
Unknown
Availability (A):
Unknown

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Junos OS 12.3R12-S15
Junos OS 12.3X48-D95
Junos OS 14.1X53-D53
Junos OS 15.1R7-S6
Junos OS 15.1X49-D200
Junos OS 15.1X53-D593
Junos OS 16.1R7-S7
Junos OS 16.2R2-S11
Junos OS 17.1R2-S11, 17.1R3-S2
Junos OS 17.2R3-S3
Junos OS 17.2X75-D44
Junos OS 17.3R3-S7
Junos OS 17.4R2-S9, 17.4R3
Junos OS 18.1R3-S9
Junos OS 18.2R2-S6, 18.2R3-S2
Junos OS 18.2X75-D12, 18.2X75-D33, 18.2X75-D435, 18.2X75-D60
Junos OS 18.3R1-S7, 18.3R2-S3, 18.3R3-S1
Junos OS 18.4R1-S5, 18.4R2-S3, 18.4R3
Junos OS 19.1R1-S4, 19.1R2
Junos OS 19.2R1-S3, 19.2R2
Junos OS 19.3R2
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • juniper

Products

  • junos 12.3,
  • junos 12.3x48,
  • junos 14.1x53,
  • junos 15.1,
  • junos 15.1x49,
  • junos 15.1x53,
  • junos 16.1,
  • junos 16.2,
  • junos 17.1,
  • junos 17.2,
  • junos 17.2x75,
  • junos 17.3,
  • junos 17.4,
  • junos 18.1,
  • junos 18.2,
  • junos 18.2x75,
  • junos 18.3,
  • junos 18.4,
  • junos 19.1,
  • junos 19.2,
  • junos 19.3
Technical Analysis