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CVE-2020-1680— Junos OS: MX Series: MS-MPC/MIC might crash when processing malformed IPv6 packet in NAT64 configuration.

Quick assessment

Affected
Juniper Networks Junos OS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Juniper Networks Junos OS MX是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Junos OS MX 存在安全漏洞，攻击者可利用该漏洞可以通过NAT64 IPv6触发致命错误，以触发拒绝服务。

CVSS 5.3 · Medium EPSS 1.31% · P70

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-1680

Vulnerability Information
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Vulnerability Title
Junos OS: MX Series: MS-MPC/MIC might crash when processing malformed IPv6 packet in NAT64 configuration.
Source: CVE Program / CVE List V5
Vulnerability Description
On Juniper Networks MX Series with MS-MIC or MS-MPC card configured with NAT64 configuration, receipt of a malformed IPv6 packet may crash the MS-PIC component on MS-MIC or MS-MPC. This issue occurs when a multiservice card is translating the malformed IPv6 packet to IPv4 packet. An unauthenticated attacker can continuously send crafted IPv6 packets through the device causing repetitive MS-PIC process crashes, resulting in an extended Denial of Service condition. This issue affects Juniper Networks Junos OS on MX Series: 15.1 versions prior to 15.1R7-S7; 15.1X53 versions prior to 15.1X53-D593; 16.1 versions prior to 16.1R7-S8; 17.2 versions prior to 17.2R3-S4; 17.3 versions prior to 17.3R3-S6; 17.4 versions prior to 17.4R2-S11, 17.4R3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.2X75 versions prior to 18.2X75-D41, 18.2X75-D430, 18.2X75-D53, 18.2X75-D65; 18.3 versions prior to 18.3R2-S4, 18.3R3; 18.4 versions prior to 18.4R2-S5, 18.4R3; 19.1 versions prior to 19.1R2; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区大小计算不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS MX 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS MX是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Junos OS MX 存在安全漏洞，攻击者可利用该漏洞可以通过NAT64 IPv6触发致命错误，以触发拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Juniper Networks Junos OS 15.1 ~ 15.1R7-S7 -

II. Public POCs for CVE-2020-1680

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III. Intelligence Information for CVE-2020-1680

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Vendor Advisories for CVE-2020-1680 (1)

Same Patch Batch · Juniper Networks · 2020-10-16 · 30 CVEs total

CVE-2020-1656 8.8 HIGH Junos OS: When a DHCPv6 Relay-Agent is configured upon receipt of a specific DHCPv6 client
CVE-2020-1673 8.8 HIGH Junos OS: Reflected Cross-site Scripting vulnerability in J-Web and web based (HTTP/HTTPS)
CVE-2020-1660 8.3 HIGH Junos OS: MX Series: Receipt of specific packets can cause services card to restart when D
CVE-2020-1667 8.3 HIGH Junos OS: MX Series: Services card might restart due to a race condition when DNS filterin
CVE-2020-1675 8.3 HIGH Juniper Networks Mist Cloud UI: SAML authentication certificate vulnerability.
CVE-2020-1664 7.8 HIGH Junos OS: Buffer overflow vulnerability in device control daemon
CVE-2020-1657 7.5 HIGH Junos OS: SRX Series: An attacker sending spoofed packets to IPSec peers may cause a Denia
CVE-2020-1686 7.5 HIGH Junos OS: Kernel crash (vmcore) upon receipt of a malformed IPv6 packet.
CVE-2020-1684 7.5 HIGH Junos OS: SRX Series: High CPU load due to processing for HTTP traffic when Application Id
CVE-2020-1683 7.5 HIGH Junos OS: Memory leak leads to kernel crash (vmcore) due to SNMP polling
CVE-2020-1679 7.5 HIGH Junos OS: PTX/QFX Series: Kernel Routing Table (KRT) queue stuck after packet sampling a m
CVE-2020-1672 7.5 HIGH Junos OS: jdhcpd process crash when processing a specific DHCPDv6 packet in DHCPv6 relay c
CVE-2020-1662 7.5 HIGH Junos OS and Junos OS Evolved: RPD crash due to BGP session flapping.
CVE-2020-1671 7.5 HIGH Junos OS: Receipt of malformed DHCPv6 packets causes jdhcpd to crash.
CVE-2020-1676 7.2 HIGH Juniper Networks Mist Cloud UI: SAML authentication response handling vulnerability.
CVE-2020-1677 7.2 HIGH Juniper Networks Mist Cloud UI: SAML authentication attribute elements handling vulnerabil
CVE-2020-1666 6.6 MEDIUM Junos OS Evolved: 'console log-out-on-disconnect' fails to terminate session on console ca
CVE-2020-1681 6.5 MEDIUM Junos OS Evolved: Receipt of a specifically malformed NDP packet could lead to Denial of S
CVE-2020-1689 6.5 MEDIUM Junos OS: EX4300-MP/EX4600/QFX5K Series: High CPU load due to receipt of specific layer 2
CVE-2020-1688 6.5 MEDIUM Junos OS: SRX and NFX Series: Insufficient Web API private key protection

Showing top 20 of 30 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-131

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