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CVE-2018-0031— Junos OS: Receipt of specially crafted UDP packets over MPLS may bypass stateless IP firewall rules

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。 Juniper Junos OS中存在安全漏洞。攻击者可借助大量的特制UDP/IP数据包利用该漏洞绕过IP防火墙过滤器规则，造成拒绝服务。以下版本受到影响：Juniper Junos OS 12.1X46版本，12.3版本，12.3X48版本，14.1X53版本，15.1版本，15.1X49版本，15.1X53版本（在EX23

AI Predicted 6.5 Difficulty: Moderate EPSS 1.26% · P68

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2018-0031

Vulnerability Information
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Vulnerability Title
Junos OS: Receipt of specially crafted UDP packets over MPLS may bypass stateless IP firewall rules
Source: CVE Program / CVE List V5
Vulnerability Description
Receipt of specially crafted UDP/IP packets over MPLS may be able to bypass a stateless firewall filter. The crafted UDP packets must be encapsulated and meet a very specific packet format to be classified in a way that bypasses IP firewall filter rules. The packets themselves do not cause a service interruption (e.g. RPD crash), but receipt of a high rate of UDP packets may be able to contribute to a denial of service attack. This issue only affects processing of transit UDP/IP packets over MPLS, received on an interface with MPLS enabled. TCP packet processing and non-MPLS encapsulated UDP packet processing are unaffected by this issue. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D76; 12.3 versions prior to 12.3R12-S10; 12.3X48 versions prior to 12.3X48-D66, 12.3X48-D70; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D131, 15.1X49-D140; 15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400; 15.1X53 versions prior to 15.1X53-D67 on QFX10K; 15.1X53 versions prior to 15.1X53-D233 on QFX5200/QFX5110; 15.1X53 versions prior to 15.1X53-D471, 15.1X53-D490 on NFX; 16.1 versions prior to 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7; 16.2 versions prior to 16.2R1-S6, 16.2R2-S5, 16.2R3; 17.1 versions prior to 17.1R1-S7, 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S6, 17.2R2-S4, 17.2R3; 17.2X75 versions prior to 17.2X75-D100; 17.3 versions prior to 17.3R1-S4, 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.1 versions prior to 18.1R2; 18.2X75 versions prior to 18.2X75-D5.
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 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。 Juniper Junos OS中存在安全漏洞。攻击者可借助大量的特制UDP/IP数据包利用该漏洞绕过IP防火墙过滤器规则，造成拒绝服务。以下版本受到影响：Juniper Junos OS 12.1X46版本，12.3版本，12.3X48版本，14.1X53版本，15.1版本，15.1X49版本，15.1X53版本（在EX23
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-D76 -
Juniper Networks Junos OS 12.3 ~ 12.3R12-S10 -
Juniper Networks Junos OS 14.1X53 ~ 14.1X53-D47 -
Juniper Networks Junos OS 15.1X53 ~ 15.1X53-D59 -
Juniper Networks Junos OS 15.1X53 ~ 15.1X53-D67 -
Juniper Networks Junos OS 15.1X53 ~ 15.1X53-D233 -
Juniper Networks Junos OS 15.1X53 ~ 15.1X53-D471, 15.1X53-D490 -

II. Public POCs for CVE-2018-0031

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III. Intelligence Information for CVE-2018-0031

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Vendor Advisories for CVE-2018-0031 (2)

Same Patch Batch · Juniper Networks · 2018-07-11 · 14 CVEs total

CVE-2018-0024 Junos OS: A privilege escalation vulnerability exists where authenticated users with shell
CVE-2018-0025 Junos OS: SRX Series: Credentials exposed when using HTTP and HTTPS Firewall Pass-through
CVE-2018-0026 Junos OS: Stateless IP firewall filter rules stop working as expected after reboot or upgr
CVE-2018-0027 Junos OS: Receipt of malformed RSVP packet may lead to RPD denial of service
CVE-2018-0029 Junos OS: Kernel crash (vmcore) during broadcast storm after enabling 'monitor traffic int
CVE-2018-0030 Junos OS: MPC7/8/9, PTX-FPC3 (FPC-P1, FPC-P2) and PTX1K: Line card may crash upon receipt
CVE-2018-0032 Junos OS: RPD crash when receiving a crafted BGP UPDATE
CVE-2018-0034 Junos OS: A malicious crafted IPv6 DHCP packet may cause the JDHCPD daemon to core
CVE-2018-0035 Junos OS: QFX5200 and QFX10002: Unintended ONIE partition was shipped with certain Junos O
CVE-2018-0037 Junos OS: RPD daemon crashes due to receipt of crafted BGP NOTIFICATION messages
CVE-2018-0039 Contrail Service Orchestration: Hardcoded credentials for Grafana service
CVE-2018-0040 Contrail Service Orchestration: hardcoded cryptographic certificates and keys
CVE-2018-0041 Contrail Service Orchestration: Hardcoded credentials for Keystone service.

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks

V. Comments for CVE-2018-0031

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