#VU17083 Security restrictions bypass in Juniper Junos OS - CVE-2019-0005

Vulnerability identifier: #VU17083

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

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-D15 - 14.1x53, 15.1R - 15.1, 16.1R - 16.1, 17.1R1-S1 - 17.1, 17.2R1-S1 - 17.2, 17.3R1-S1 - 17.3, 17.4R1-S1 - 17.4, 18.1R1 - 18.1

---

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

---

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.