CVE-2020-1646— Junos OS and Junos OS Evolved: RPD crash while processing a specific BGP update information.
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I. Basic Information for CVE-2020-1646
Vulnerability Information
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Vulnerability Title
Junos OS and Junos OS Evolved: RPD crash while processing a specific BGP update information.
Source: NVD (National Vulnerability Database)
Vulnerability Description
On Juniper Networks Junos OS and Junos OS Evolved devices, processing a specific UPDATE for an EBGP peer can lead to a routing process daemon (RPD) crash and restart. This issue occurs only when the device is receiving and processing the BGP UPDATE for an EBGP peer. This issue does not occur when the device is receiving and processing the BGP UPDATE for an IBGP peer. However, the offending BGP UPDATE can originally come from an EBGP peer, propagates through the network via IBGP peers without causing crash, then it causes RPD crash when it is processed for a BGP UPDATE towards an EBGP peer. Repeated receipt and processing of the same specific BGP UPDATE can result in an extended Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 17.3R3-S6, 17.4R2-S7, and 18.1R3-S7. Juniper Networks Junos OS Evolved 19.2R2-EVO and later versions, prior to 19.3R1-EVO. Other Junos OS releases are not affected.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Juniper Networks Junos OS 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS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 Evolved是Junos OS的升级版。 Juniper Networks Junos OS和Junos OS Evolved中存在安全漏洞。攻击者可利用该漏洞导致路由进程守护程序（RPD）崩溃并重新启动。以下产品及版本受到影响：Juniper Networks Junos OS 17.3版
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 | 17.3R3-S6 | - | |
| Juniper Networks | Junos OS Evolved | unspecified ~ 19.3R1-EVO | - |
II. Public POCs for CVE-2020-1646
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Juniper Networks · 2020-07-17 · 15 CVEs total
| CVE-2020-1654 | 9.8 CRITICAL | Junos OS: SRX Series: processing a malformed HTTP message when ICAP redirect service is en |
| CVE-2020-1647 | 9.8 CRITICAL | Junos OS: SRX Series: Double free vulnerability can lead to DoS or remote code execution d |
| CVE-2020-1645 | 8.3 HIGH | Junos OS: MX Series: Services card might restart when DNS filtering is enabled |
| CVE-2020-1653 | 7.5 HIGH | Junos OS: Kernel crash (vmcore) or FPC crash due to mbuf leak |
| CVE-2020-1649 | 7.5 HIGH | Junos OS: MX Series: PFE crash on MPC7/8/9 upon receipt of small fragments requiring reass |
| CVE-2020-1650 | 7.5 HIGH | Junos OS: MX Series: Denial of Service vulnerability in MS-PIC component on MS-MIC or MS-M |
| CVE-2020-1648 | 7.5 HIGH | Junos OS and Junos OS Evolved: RPD crash when processing a specific BGP packet |
| CVE-2020-1644 | 7.5 HIGH | Junos OS and Junos OS Evolved: RPD crash due to specific BGP UPDATE packets |
| CVE-2020-1640 | 7.5 HIGH | Junos OS: Receipt of certain genuine BGP packets from any BGP Speaker causes RPD to crash. |
| CVE-2020-1651 | 6.5 MEDIUM | Junos OS: MX Series: PFE on the line card may crash due to memory leak. |
| CVE-2020-1641 | 6.5 MEDIUM | Junos OS: A race condition on receipt of crafted LLDP packets leads to a memory leak and a |
| CVE-2020-1652 | 5.6 MEDIUM | Junos Space: OpenNMS is accessible via port 9443 |
| CVE-2020-1643 | 5.5 MEDIUM | Junos OS: EX Series: RPD crash when executing specific "show ospf interface" commands from |
| CVE-2020-1655 | 5.3 MEDIUM | Junos OS: MX Series: PFE crash on MPC7/8/9 upon receipt of large packets requiring fragmen |
IV. Related Vulnerabilities
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Same vendor: Juniper Networks
- CVE-2026-33791
Junos OS and Junos OS Evolved: Execution of crafted CLI comm - CVE-2026-33790
Junos OS: SRX Series: In a NAT64 configuration, receipt of a - CVE-2026-33787
Junos OS: SRX1500, SRX4100, SRX4200, SRX4600: When a specifi - CVE-2026-33785
Junos OS: MX Series: Missing Authorization for specific 'req - CVE-2026-33784
JSI Virtual Lightweight Collector: Default password is not r
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