#VU68369 Time-of-check Time-of-use (TOCTOU) Race Condition in Juniper Junos OS and Junos OS Evolved - CVE-2022-22220

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Main Vulnerability Database Vulnerabilities #VU68369

#VU68369 Time-of-check Time-of-use (TOCTOU) Race Condition in Juniper Junos OS and Junos OS Evolved - CVE-2022-22220

Published: October 17, 2022


Vulnerability identifier: #VU68369
Vulnerability risk: Medium
CVSSv4.0: 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
CVE-ID: CVE-2022-22220
CWE-ID: CWE-367
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Juniper Junos OS
Junos OS Evolved
Software vendor:
Juniper Networks, Inc.

Description

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

The vulnerability exists due to a race condition in Routing Protocol Daemon (rpd) when handling BGP traffic. When a BGP flow route with redirect IP extended community is received, and the reachability to the next-hop of the corresponding redirect IP is flapping, the rpd process might crash.


Remediation

Install updates from vendor's website.

External links