Denial of service in Junos OS QFX10002 PFE

1) Improper Check or Handling of Exceptional Conditions

EUVDB-ID: #VU75107

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-28959

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

Exploit availability: No

Description

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

The vulnerability exists due to an error when processing network packets. A remote attacker on the local broadcast domain can send a malformed packet to the device, causing all PFEs other than the inbound PFE to wedge and to eventually restart.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 19.4R1-S1 - 22.3R1

CPE2.3

• cpe:2.3:o:juniper_networks:juniper_junos_os:19.4:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:20.2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:20.4:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.3R3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.4R3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:22.1R3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:22.2R2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:22.3R1:*:*:*:*:*:*:*

External links

https://supportportal.juniper.net/s/article/2023-04-Security-Bulletin-Junos-OS-QFX10002-PFE-wedges-and-restarts-upon-receipt-of-specific-malformed-packets-CVE-2023-28959

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.