PT-2018-8578 · Juniper Networks · Junos

Published 2018-07-11 · Updated 2019-10-09 · CVE-2018-0031

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Junos OS versions prior to 12.1X46-D76 Junos OS versions prior to 12.3R12-S10 Junos OS versions prior to 12.3X48-D66 Junos OS versions prior to 12.3X48-D70 Junos OS versions prior to 14.1X53-D47 Junos OS versions prior to 15.1F6-S10 Junos OS versions prior to 15.1R4-S9 Junos OS versions prior to 15.1R6-S6 Junos OS versions prior to 15.1R7 Junos OS versions prior to 15.1X49-D131 Junos OS versions prior to 15.1X49-D140 Junos OS versions prior to 15.1X53-D59 on EX2300/EX3400 Junos OS versions prior to 15.1X53-D67 on QFX10K Junos OS versions prior to 15.1X53-D233 on QFX5200/QFX5110 Junos OS versions prior to 15.1X53-D471 on NFX Junos OS versions prior to 15.1X53-D490 on NFX Junos OS versions prior to 16.1R3-S8 Junos OS versions prior to 16.1R4-S9 Junos OS versions prior to 16.1R5-S4 Junos OS versions prior to 16.1R6-S3 Junos OS versions prior to 16.1R7 Junos OS versions prior to 16.2R1-S6 Junos OS versions prior to 16.2R2-S5 Junos OS versions prior to 16.2R3 Junos OS versions prior to 17.1R1-S7 Junos OS versions prior to 17.1R2-S7 Junos OS versions prior to 17.1R3 Junos OS versions prior to 17.2R1-S6 Junos OS versions prior to 17.2R2-S4 Junos OS versions prior to 17.2R3 Junos OS versions prior to 17.2X75-D100 Junos OS versions prior to 17.3R1-S4 Junos OS versions prior to 17.3R2-S2 Junos OS versions prior to 17.3R3 Junos OS versions prior to 17.4R1-S3 Junos OS versions prior to 17.4R2 Junos OS versions prior to 18.1R2 Junos OS versions prior to 18.2X75-D5

Description: Receipt of specially crafted UDP/IP packets over MPLS may bypass a stateless firewall filter. The crafted UDP packets must be encapsulated and meet a specific packet format to be classified in a way that bypasses IP firewall filter rules. 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. Receipt of a high rate of UDP packets may contribute to a denial of service attack.

Recommendations: Update to a version of Junos OS that is not affected by this issue, such as 12.1X46-D76 or later, 12.3R12-S10 or later, 12.3X48-D66 or later, 12.3X48-D70 or later, 14.1X53-D47 or later, 15.1F6-S10 or later, 15.1R4-S9 or later, 15.1R6-S6 or later, 15.1R7 or later, 15.1X49-D131 or later, 15.1X49-D140 or later, 15.1X53-D59 or later on EX2300/EX3400, 15.1X53-D67 or later on QFX10K, 15.1X53-D233 or later on QFX5200/QFX5110, 15.1X53-D471 or later on NFX, 15.1X53-D490 or later on NFX, 16.1R3-S8 or later, 16.1R4-S9 or later, 16.1R5-S4 or later, 16.1R6-S3 or later, 16.1R7 or later, 16.2R1-S6 or later, 16.2R2-S5 or later, 16.2R3 or later, 17.1R1-S7 or later, 17.1R2-S7 or later, 17.1R3 or later, 17.2R1-S6 or later, 17.2R2-S4 or later, 17.2R3 or later, 17.2X75-D100 or later, 17.3R1-S4 or later, 17.3R2-S2 or later, 17.3R3 or later, 17.4R1-S3 or later, 17.4R2 or later, 18.1R2 or later, 18.2X75-D5 or later.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2018-0031

Affected Products

Junos

References · 4

• https://kb.juniper.net/JSA10865 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-0031 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-0031 · Security Note
• http://securitytracker.com/id/1041326 · Note