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CVE-2018-0051— Junos OS: Denial of Service vulnerability in MS-PIC, MS-MIC, MS-MPC, MS-DPC and SRX flow daemon (flowd) related to SIP ALG

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 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系统的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。SIP application layer gateway（ALG）是其中的一个应用层网关组件。 Juniper Junos OS中的SIP ALG组件存在拒绝服务漏洞。攻击者可利用该漏洞造成MS-PIC、MS-MIC、MS-MPC、MS-DPC或SRX flow daemon进程崩溃。以下版本受到影响：Juniper Juno

AI Predicted 7.5 Difficulty: Easy EPSS 1.59% · P75

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2018-0051

Vulnerability Information
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Vulnerability Title
Junos OS: Denial of Service vulnerability in MS-PIC, MS-MIC, MS-MPC, MS-DPC and SRX flow daemon (flowd) related to SIP ALG
Source: CVE Program / CVE List V5
Vulnerability Description
A Denial of Service vulnerability in the SIP application layer gateway (ALG) component of Junos OS based platforms allows an attacker to crash MS-PIC, MS-MIC, MS-MPC, MS-DPC or SRX flow daemon (flowd) process. This issue affects Junos OS devices with NAT or stateful firewall configuration in combination with the SIP ALG enabled. SIP ALG is enabled by default on SRX Series devices except for SRX-HE devices. SRX-HE devices have SIP ALG disabled by default. The status of ALGs in SRX device can be obtained by executing the command: show security alg status Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D77; 12.3X48 versions prior to 12.3X48-D70; 15.1X49 versions prior to 15.1X49-D140; 15.1 versions prior to 15.1R4-S9, 15.1R7-S1; 15.1F6; 16.1 versions prior to 16.1R4-S9, 16.1R6-S1, 16.1R7; 16.2 versions prior to 16.2R2-S7, 16.2R3; 17.1 versions prior to 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S6, 17.2R2-S4, 17.2R3; 17.3 versions prior to 17.3R1-S5, 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R2. 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 Junos OS SIP application layer gateway组件安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper 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系统的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。SIP application layer gateway（ALG）是其中的一个应用层网关组件。 Juniper Junos OS中的SIP ALG组件存在拒绝服务漏洞。攻击者可利用该漏洞造成MS-PIC、MS-MIC、MS-MPC、MS-DPC或SRX flow daemon进程崩溃。以下版本受到影响：Juniper Juno
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-D77 -
Juniper Networks Junos OS 15.1F6 -

II. Public POCs for CVE-2018-0051

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III. Intelligence Information for CVE-2018-0051

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Vendor Advisories for CVE-2018-0051 (2)

Same Patch Batch · Juniper Networks · 2018-10-10 · 21 CVEs total

CVE-2018-0054 QFX5000/EX4600 Series: Routing protocol flap upon receipt of high rate of Ethernet frames
CVE-2018-0063 Junos OS: Nexthop index allocation failed: private index space exhausted after incoming AR
CVE-2018-0062 Junos OS: Denial of Service in J-Web
CVE-2018-0061 Junos OS: Denial of service in telnetd
CVE-2018-0060 Junos OS: Invalid IP/mask learned from DHCP server might cause device control daemon (dcd)
CVE-2018-0059 ScreenOS: Stored Cross-Site Scripting (XSS) vulnerability
CVE-2018-0058 MX Series: In BBE configurations, receipt of a crafted IPv6 exception packet causes a Deni
CVE-2018-0057 Junos OS: authd allows assignment of IP address requested by DHCP subscriber logging in wi
CVE-2018-0056 MX Series: L2ALD daemon may crash if a duplicate MAC is learned by two different interface
CVE-2018-0055 Junos OS: jdhcpd process crash during processing of specially crafted DHCPv6 message
CVE-2018-0043 Junos OS: RPD daemon crashes upon receipt of specific MPLS packet
CVE-2018-0053 vSRX Series: A local authentication vulnerability may lead to full control of a vSRX insta
CVE-2018-0052 Junos OS: Unauthenticated remote root access possible when RSH service is enabled
CVE-2018-0050 Junos OS: Receipt of a malformed MPLS RSVP packet leads to a Routing Protocols Daemon (RPD
CVE-2018-0049 Junos OS: Receipt of a specifically crafted malicious MPLS packet leads to a Junos kernel
CVE-2018-0048 Junos OS: Memory exhaustion denial of service vulnerability in Routing Protocols Daemon (R
CVE-2018-0047 Junos Space Security Director: XSS vulnerability in web administration
CVE-2018-0046 Junos Space: Reflected Cross-site Scripting vulnerability in OpenNMS
CVE-2018-0045 Junos OS: RPD daemon crashes due to receipt of specific Draft-Rosen MVPN control packet in
CVE-2018-0044 NFX Series: Insecure sshd configuration in Juniper Device Manager (JDM) and host OS

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks

V. Comments for CVE-2018-0051

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