This security bulletin contains one medium risk vulnerability.
Exploit availability: NoDescription
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to resource exhaustion in the NETISR network queue functionality. A remote attacker can send specially crafted packets over an IPv4 unicast routing equal-cost multi-path (ECMP) unilist selection and force the routing protocol daemon (rpd) to consume all available CPU resources.
Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition.Mitigation
Install updates from vendor's website.Vulnerable software versions
Juniper Junos OS: before 17.3R3-S12, 17.4R3-S5, 18.1R3-S13, 18.3R3-S5, 18.4R3-S9, 19.1R3-S7CPE2.3
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.