#VU17020 Reachable assertion in Juniper Junos OS - CVE-2019-0003

Vulnerability identifier: #VU17020

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-0003

CWE-ID: CWE-617

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 cause DoS condition.

The vulnerability exists due to a reachable assertion failure when a specific BGP flowspec configuration is enabled and upon receipt of a specific matching BGP packet meeting a specific term in the flowspec configuration. A remote attacker can cause the routing protocol daemon (rpd) process to crash with a core file being generated.

Mitigation
The vulnerability has been addressed in the versions 12.1X46-D77, 12.3R12-S10, 12.3X48-D70, 14.1X53-D47, 15.1F3, 15.1R3, 15.1X49-D140, 15.1X53-D59, 16.1R1.

Vulnerable software versions

Juniper Junos OS: 12.1X46-D60 - 12.1x46, 12.3X48-D10 - 12.3, 14.1X53-D15 - 14.1x53, 15.1F - 15.1

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External links
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10902&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.