SB2022101263 - Denial of service in Junos OS PFE

Security Bulletin ID SB2022101263

CSH Severity

Medium

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Remote access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Input validation error (CVE-ID: CVE-2022-22201)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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 Packet Forwarding Engine (PFE). A remote attacker can send specially crafted ESP packets to the device and perform a denial of service (DoS) attack.

The vulnerability affects Juniper Networks Junos OS on SRX5000 Series with SPC3, SRX4000 Series, and vSRX when PowerMode IPsec is configured and a malformed ESP packet matching an established IPsec tunnel is received.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-SRX5000-Series-with-SPC3-SRX4000-Series-and-vSRX-When-PowerMode-IPsec-is-configured-the-PFE-will-crash-upon-receipt-of-a-malformed-ESP-packet-CVE-2022-22201