SB2022101260 - Denial of service in Junos OS and Junos OS Evolved rpd
Published: October 12, 2022
Security Bulletin ID
SB2022101260
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) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2022-22225)
CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/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 a race condition in the Routing Protocol Daemon (rpd). In a BGP multipath scenario, when one of the contributing routes is flapping often and rapidly, rpd may crash.
Remediation
Install update from vendor's website.