SB2022011231 - Denial of service in Junos OS FPC

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Main Vulnerability Database SB2022011231

SB2022011231 - Denial of service in Junos OS FPC

Published: January 12, 2022

Security Bulletin ID SB2022011231
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Memory leak (CVE-ID: CVE-2022-22170)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

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 DoS attack on the target system.

The vulnerability exists due memory leak in the Packet Forwarding Engine (PFE). A remote attacker can send specific packets over VXLAN and perform denial of service attack by resetting FPC.


2) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2022-22171)

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

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 preform a denial of service (DoS) attack.

The vulnerability exists due to improper error handling in the Packet Forwarding Engine (PFE). A remote attacker can send specially crafted packets over VXLAN and perform a denial of service (DoS) attack by resetting FPC.


Remediation

Install update from vendor's website.

References