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CVE-2018-0002— MX series, SRX series: Junos OS: Denial of service vulnerability in Flowd on devices with ALG enabled.

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 SRX Series和MX Series with Service PIC都是美国瞻博网络（Juniper Networks）公司的防火墙设备。Junos OS是运行在其中的一套操作系统。 带有Service PIC的Juniper SRX Series和MX Series设备中的Junos OS存在拒绝服务漏洞。当ALG被打开时，攻击者可借助特制的TCP/IP响应数据包利用该漏洞造成拒绝服务（内存损害和flowd守护进程崩溃）。以下版本受到影响：Juniper Junos OS 12.1

AI Predicted 7.5 Difficulty: Moderate EPSS 1.54% · P74

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2018-0002

Vulnerability Information
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Vulnerability Title
MX series, SRX series: Junos OS: Denial of service vulnerability in Flowd on devices with ALG enabled.
Source: CVE Program / CVE List V5
Vulnerability Description
On SRX Series and MX Series devices with a Service PIC with any ALG enabled, a crafted TCP/IP response packet processed through the device results in memory corruption leading to a flowd daemon crash. Sustained crafted response packets lead to repeated crashes of the flowd daemon which results in an extended Denial of Service condition. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D60 on SRX series; 12.3X48 versions prior to 12.3X48-D35 on SRX series; 14.1 versions prior to 14.1R9 on MX series; 14.2 versions prior to 14.2R8 on MX series; 15.1X49 versions prior to 15.1X49-D60 on SRX series; 15.1 versions prior to 15.1R5-S8, 15.1F6-S9, 15.1R6-S4, 15.1R7 on MX series; 16.1 versions prior to 16.1R6 on MX series; 16.2 versions prior to 16.2R3 on MX series; 17.1 versions prior to 17.1R2-S4, 17.1R3 on MX series. No other Juniper Networks products or platforms are affected by this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper SRX Series和MX Series Junos OS
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper SRX Series和MX Series with Service PIC都是美国瞻博网络（Juniper Networks）公司的防火墙设备。Junos OS是运行在其中的一套操作系统。 带有Service PIC的Juniper SRX Series和MX Series设备中的Junos OS存在拒绝服务漏洞。当ALG被打开时，攻击者可借助特制的TCP/IP响应数据包利用该漏洞造成拒绝服务（内存损害和flowd守护进程崩溃）。以下版本受到影响：Juniper Junos OS 12.1
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 12.1X46 ~ 12.1X46-D60 -
Juniper Networks Junos OS 14.1 ~ 14.1R9 -

II. Public POCs for CVE-2018-0002

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III. Intelligence Information for CVE-2018-0002

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Vendor Advisories for CVE-2018-0002 (2)

Same Patch Batch · Juniper Networks · 2018-01-10 · 12 CVEs total

CVE-2018-0001 Junos: Unauthenticated Remote Code Execution through J-Web interface
CVE-2018-0003 Junos OS: A crafted MPLS packet may lead to a kernel crash
CVE-2018-0004 Junos OS: Kernel Denial of Service Vulnerability
CVE-2018-0005 Security Bulletin: Junos OS: MAC move limit configured to drop traffic may forward traffic
CVE-2018-0006 Junos OS: bbe-smgd process denial of service while processing VLAN authentication requests
CVE-2018-0008 Junos OS: commit script may allow unauthenticated root login upon reboot
CVE-2018-0009 SRX Series: Firewall bypass vulnerability when UUID with leading zeros is configured.
CVE-2018-0011 Junos Space: Reflected XSS vulnerability in Junos Space management interface
CVE-2018-0012 Junos Space: Local privilege escalation vulnerability in Junos Space
CVE-2018-0013 Junos Space: Local File Inclusion Vulnerability
CVE-2018-0014 ScreenOS: Etherleak vulnerability found on ScreenOS device

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks

V. Comments for CVE-2018-0002

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