| Assigner | juniper |
| Reserved | 2024-03-26 |
| Published | 2024-04-12 |
| Updated | 2024-07-05 |
Description
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). When telemetry requests are sent to the device, and the Dynamic Rendering Daemon (drend) is suspended, the l2ald crashes and restarts due to factors outside the attackers control. Repeated occurrences of these events causes a sustained DoS condition. This issue affects: Junos OS: * All versions earlier than 20.4R3-S10; * 21.2 versions earlier than 21.2R3-S7; * 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-S1; * 22.4 versions earlier than 22.4R3; * 23.2 versions earlier than 23.2R1-S2, 23.2R2. Junos OS Evolved: * All versions earlier than 21.4R3-S5-EVO; * 22.1-EVO versions earlier than 22.1R3-S4-EVO; * 22.2-EVO versions earlier than 22.2R3-S3-EVO; * 22.3-EVO versions earlier than 22.3R3-S1-EVO; * 22.4-EVO versions earlier than 22.4R3-EVO; * 23.2-EVO versions earlier than 23.2R2-EVO.
| CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | |
| CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L |
Problem types
CWE-754 Improper Check for Unusual or Exceptional Conditions
Denial of Service (DoS)
Product status
20.4 before 20.4R3-S10
21.2 before 21.2R3-S7
21.4 before 21.4R3-S5
22.1 before 22.1R3-S4
22.2 before 22.2R3-S3
22.3 before 22.3R3-S1
22.4 before 22.4R3
23.2 before 23.2R1-S2, 23.2R2
21.4-EVO before 21.4R3-S5-EVO
22.1-EVO before 22.1R3-S4-EVO
22.2-EVO before 22.2R3-S3-EVO
22.3-EVO before 22.3R3-S1-EVO
22.4-EVO before 22.4R3-EVO
23.2-EVO before 23.2R2-EVO
References
https://supportportal.juniper.net/JSA79180
https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
