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CVE-2020-1651— Junos OS: MX Series: PFE on the line card may crash due to memory leak.

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。 Juniper Networks Junos OS（MX Series）中存在代码问题漏洞。攻击者可利用该漏洞导致PFE崩溃（拒绝服务）。以下产品及版本受到影响：Juniper Networks Junos OS 17.2版本，17.2X75版本，17.3版本，17.4版本，18.1版本。

CVSS 6.5 · Medium EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-1651

Vulnerability Information
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Vulnerability Title
Junos OS: MX Series: PFE on the line card may crash due to memory leak.
Source: CVE Program / CVE List V5
Vulnerability Description
On Juniper Networks MX series, receipt of a stream of specific Layer 2 frames may cause a memory leak resulting in the packet forwarding engine (PFE) on the line card to crash and restart, causing traffic interruption. By continuously sending this stream of specific layer 2 frame, an attacker connected to the same broadcast domain can repeatedly crash the PFE, causing a prolonged Denial of Service (DoS). This issue affects Juniper Networks Junos OS on MX Series: 17.2 versions prior to 17.2R3-S4; 17.2X75 versions prior to 17.2X75-D105.19; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.1 versions prior to 18.1R2. This issue does not affect Juniper Networks Junos OS releases prior to 17.2R1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
数据处理错误
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 代码问题漏洞
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。 Juniper Networks Junos OS（MX Series）中存在代码问题漏洞。攻击者可利用该漏洞导致PFE崩溃（拒绝服务）。以下产品及版本受到影响：Juniper Networks Junos OS 17.2版本，17.2X75版本，17.3版本，17.4版本，18.1版本。
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 unspecified ~ 17.2R1 -

II. Public POCs for CVE-2020-1651

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III. Intelligence Information for CVE-2020-1651

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Vendor Advisories for CVE-2020-1651 (1)

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-2020-1646 7.5 HIGH Junos OS and Junos OS Evolved: RPD crash while processing a specific BGP update informatio
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-2020-1641 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

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-19

V. Comments for CVE-2020-1651

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