Improper check for unusual or exceptional conditions in Juniper Junos OS

1) Improper check for unusual or exceptional conditions

EUVDB-ID: #VU82463

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-2022-22185

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

Exploit availability: No

Description

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

A vulnerability in Juniper Networks Junos OS on SRX Series, allows a network-based unauthenticated attacker to cause a Denial of Service (DoS) by sending a specific fragmented packet to the device, resulting in a flowd process crash, which is responsible for packet forwarding. Continued receipt and processing of this specific packet will create a sustained DoS condition.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 18.3 - 21.2R1-S2

External links

http://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Junos-OS-SRX-Series-Denial-of-service-vulnerability-in-flowd-daemon-upon-receipt-of-a-specific-fragmented-packet-CVE-2022-22185

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.