Denial of servce in Juniper QFX 5000 Series

1) Resource exhaustion

EUVDB-ID: #VU54990

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0285

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when processing a large amounts of legitimate traffic destined to the device. A remote attacker cause Interchassis Control Protocol (ICCP) interruptions leading to an unstable control connection between the MC-LAG nodes which can in turn lead to traffic loss.

The vulnerability affects QFX 5000 Series.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 15.1 - 21.1

External links

http://kb.juniper.net/JSA11187

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.