An Improper Handling of Exceptional Conditions vulnerability in the Class of Service daemon (cosd) of Juniper Networks Junos OS on MX Series allows an authenticated, network-based attacker with low privileges to cause a limited Denial of Service (DoS). In a scaled subscriber scenario when specific low privileged commands, received over NETCONF, SSH or telnet, are handled by cosd on behalf of mgd, the respective child management daemon (mgd) processes will get stuck. In case of (Netconf over) SSH this leads to stuck SSH sessions, so that when the connection-limit for SSH is reached new sessions can't be established anymore. A similar behavior will be seen for telnet etc. Stuck mgd processes can be monitored by executing the following command:   user@host> show system processes extensive | match mgd | match sbwait This issue affects Juniper Networks Junos OS on MX Series: All versions earlier than 20.4R3-S9; 21.2 versions earlier than 21.2R3-S7; 21.3 versions earlier than 21.3R3-S5; 21.4 versions earlier than 21.4R3-S5; 22.1 versions earlier than 22.1R3-S4; 22.2 versions earlier than 22.2R3-S3; 22.3 versions earlier than 22.3R3-S2; 22.4 versions earlier than 22.4R3; 23.2 versions earlier than 23.2R1-S2, 23.2R2.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published: 2024-04-12T14:55:15.514Z

Updated: 2024-08-01T22:27:35.697Z

Reserved: 2023-12-27T19:38:25.709Z

Link: CVE-2024-21610

cve-icon Vulnrichment

Updated: 2024-08-01T22:27:35.697Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-04-12T15:15:23.950

Modified: 2024-11-21T08:54:42.883

Link: CVE-2024-21610

cve-icon Redhat

No data.