Vulnerability identifier: #VU82472
Vulnerability risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-606
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Juniper Junos OS
Operating systems & Components /
Operating system
Vendor: Juniper Networks, Inc.
Description
The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.
The vulnerability exists due to unchecked input for loop condition error in a NAT library. A local authenticated user can cause a Denial of Service (DoS).
When an inconsistent "deterministic NAT" configuration is present on an SRX, or MX with SPC3 and then a specific CLI command is issued the SPC will crash and restart.
Repeated execution of this command will lead to a sustained DoS.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Juniper Junos OS: 21.4R1 - 21.4R3, 21.3R1 - 21.3R3-S2, 20.3 - 20.3R3-S5, 21.1 - 21.1R3-S3, 20.2 - 20.2R3-S5, 19.4 - 19.4R3-S9, 19.4R1 - 19.4R1-S4, 20.4 - 20.4R3-S4, 22.2R1 - 22.2R1-S2, 22.1R1 - 22.1R2-S1, 21.2R1 - 21.2R3-S2
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.