Vulnerability identifier: #VU17083

Vulnerability risk: Low

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-0005

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description
The vulnerability allows a remote attacker to bypass security restrictions.

The weakness exists due to the ignoring of IPv6 extension headers by the stateless firewall filter. A remote attacker can bypass security restrictions to forward IPv6 packets.

Mitigation
The vulnerability has been addressed in the versions 14.1X53-D47, 15.1R7, 15.1X53-D234, 15.1X53-D591, 16.1R7, 17.1R2-S10, 17.1R3, 17.2R3, 17.3R3, 17.4R2, 18.1R2, 18.2R1, 18.2X75-D5.

Vulnerable software versions

Juniper Junos OS: 14.1x53 - 14.1X53-D46, 15.1 - 15.1R6-S6, 15.1X53 - 15.1X53-D591, 16.1 - 16.1R6-S4, 17.4 - 17.4R1-S3, 17.3 - 17.3R2-S2, 17.2 - 17.2R2-S4, 17.1 - 17.1R3, 18.1 - 18.1R1

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External links
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10905&cat=SIRT_1&actp=LIST

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.