CVE-2019-0005

MEDIUM

Juniper Junos OS - IPv6 Firewall Filter Bypass via Extension Header Mismatch

Title source: llm
STIX 2.1

Description

On EX2300, EX3400, EX4600, QFX3K and QFX5K series, firewall filter configuration cannot perform packet matching on any IPv6 extension headers. This issue may allow IPv6 packets that should have been blocked to be forwarded. IPv4 packet filtering is unaffected by this vulnerability. Affected releases are Juniper Networks Junos OS on EX and QFX series;: 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1R7; 15.1X53 versions prior to 15.1X53-D234 on QFX5200/QFX5110 series; 15.1X53 versions prior to 15.1X53-D591 on EX2300/EX3400 series; 16.1 versions prior to 16.1R7; 17.1 versions prior to 17.1R2-S10, 17.1R3; 17.2 versions prior to 17.2R3; 17.3 versions prior to 17.3R3; 17.4 versions prior to 17.4R2; 18.1 versions prior to 18.1R2.

References (2)

Core 2
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/106665
Vendor Advisory x_refsource_confirm
https://kb.juniper.net/JSA10905

Scores

CVSS v3 5.3
EPSS 0.0032
EPSS Percentile 54.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Details

CWE
CWE-770
Status published
Products (5)
juniper/junos 14.1x53 (15 CPE variants)
juniper/junos 15.1 (7 CPE variants)
juniper/junos 15.1x53 (18 CPE variants)
juniper/junos 16.1 (9 CPE variants)
juniper/junos 17.1
Published Jan 15, 2019
Tracked Since Feb 18, 2026