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CVE-2020-1639— Junos OS: A crafted Ethernet OAM packet received by Junos may cause the Ethernet OAM connectivity fault management process (CFM) to core.

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中存在安全漏洞，该漏洞源于程序没有正确处理接收的畸形数据。攻击者可借助特制的数据包利用该漏洞造成拒绝服务。以下产品及版本受到影响：Juniper Networks Junos OS 12.3版本，12.3X48版本（SRX Series），14.1X50版本，

CVSS 7.5 · High EPSS 1.09% · P64

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-1639

Vulnerability Information
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Vulnerability Title
Junos OS: A crafted Ethernet OAM packet received by Junos may cause the Ethernet OAM connectivity fault management process (CFM) to core.
Source: CVE Program / CVE List V5
Vulnerability Description
When an attacker sends a specific crafted Ethernet Operation, Administration, and Maintenance (Ethernet OAM) packet to a target device, it may improperly handle the incoming malformed data and fail to sanitize this incoming data resulting in an overflow condition. This overflow condition in Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) condition by coring the CFM daemon. Continued receipt of these packets may cause an extended Denial of Service condition. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S15; 12.3X48 versions prior to 12.3X48-D95 on SRX Series; 14.1X50 versions prior to 14.1X50-D145; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1R2; 15.1X49 versions prior to 15.1X49-D170 on SRX Series; 15.1X53 versions prior to 15.1X53-D67.
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
对异常条件检查或处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 安全漏洞
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中存在安全漏洞，该漏洞源于程序没有正确处理接收的畸形数据。攻击者可借助特制的数据包利用该漏洞造成拒绝服务。以下产品及版本受到影响：Juniper Networks Junos OS 12.3版本，12.3X48版本（SRX Series），14.1X50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 12.3 ~ 12.3R12-S15 -
Juniper Networks Junos OS 12.3X48 ~ 12.3X48-D95 -

II. Public POCs for CVE-2020-1639

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III. Intelligence Information for CVE-2020-1639

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Vendor Advisories for CVE-2020-1639 (1)

Same Patch Batch · Juniper Networks · 2020-04-08 · 22 CVEs total

CVE-2020-1614 10.0 CRITICAL NFX250 Series: Hardcoded credentials in the vSRX VNF instance.
CVE-2020-1615 9.8 CRITICAL Junos OS: vMX: Default credentials supplied in vMX configuration
CVE-2020-1613 8.6 HIGH Junos OS: BGP session termination upon receipt of specific BGP FlowSpec advertisement.
CVE-2020-1634 7.5 HIGH Junos OS: High-End SRX Series: Multicast traffic might cause all FPCs to reset.
CVE-2020-1617 7.5 HIGH Junos OS: PTX1000 and PTX10000 Series, QFX10000 Series using non-AFT architectures: A spec
CVE-2020-1626 7.5 HIGH Junos OS Evolved: Denial of Service vulnerability in processing high rate of specific pack
CVE-2020-1627 7.5 HIGH Junos OS: vMX and MX150: Denial of Service vulnerability in packet processing
CVE-2020-1638 7.5 HIGH Junos OS & Junos OS Evolved: A specific IPv4 packet can lead to FPC restart.
CVE-2020-1637 7.2 HIGH Junos OS: SRX Series: Unified Access Control (UAC) bypass vulnerability
CVE-2020-1625 6.5 MEDIUM Junos OS: Kernel memory leak in virtual-memory due to interface flaps
CVE-2020-1618 6.3 MEDIUM Junos OS: EX and QFX Series: Console port authentication bypass vulnerability
CVE-2020-1619 6.0 MEDIUM Junos OS: QFX10K Series, EX9200 Series, MX Series, PTX Series: Privilege escalation vulner
CVE-2020-1629 5.9 MEDIUM Junos OS: A race condition vulnerability may cause RPD daemon to crash when processing a B
CVE-2020-1624 5.5 MEDIUM Junos OS Evolved: objmon logs may leak sensitive information
CVE-2020-1622 5.5 MEDIUM Junos OS Evolved: EvoSharedObjStore may leak sensitive information
CVE-2020-1623 5.5 MEDIUM Junos OS Evolved: ev.ops file may leak sensitive information
CVE-2020-1620 5.5 MEDIUM Junos OS Evolved: Configd leaks hashes via log file and is world readable
CVE-2020-1621 5.5 MEDIUM Junos OS Evolved: Configd leaks hashes via stream and is world readable
CVE-2020-1628 5.3 MEDIUM Junos OS: EX4300: Traffic from the network internal to the device (128.0.0.0) may be forwa
CVE-2020-1616 5.3 MEDIUM JATP Series: JATP Is susceptible to slow brute force attacks on the SSH service.

Showing top 20 of 22 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-703

V. Comments for CVE-2020-1639

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