Denial of service in Juniper Junos OS Evolved

1) Input validation error

EUVDB-ID: #VU52308

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0226

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in the IPv6 BGP session. A remote attacker on the local network can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 19.4 - 20.3

CPE2.3

• cpe:2.3:o:juniper_networks:junos_os_evolved:20.3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:junos_os_evolved:20.2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:junos_os_evolved:20.1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:junos_os_evolved:19.4:*:*:*:*:*:*:*

External links

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11121&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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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