Description
An Improper Restriction of Excessive Authentication Attempts vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited Denial of Service (DoS) to the management plane. When an incoming connection was blocked because it exceeded the connections-per-second rate-limit, the system doesn't consider existing connections anymore for subsequent connection attempts so that the connection limit can be exceeded. This issue affects Junos OS Evolved: * All versions before 21.4R3-S4-EVO, * 22.1-EVO versions before 22.1R3-S3-EVO, * 22.2-EVO versions before 22.2R3-S2-EVO, * 22.3-EVO versions before 22.3R2-S1-EVO, 22.3R3-EVO.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
http://supportportal.juniper.net/JSA79183
Issue Tracking technical-description
https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Scores
CVSS v3
5.3
EPSS
0.0051
EPSS Percentile
39.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-307
Status
published
Products (5)
juniper/junos_os_evolved
21.4 (11 CPE variants)
juniper/junos_os_evolved
22.1 (9 CPE variants)
juniper/junos_os_evolved
22.2 (9 CPE variants)
juniper/junos_os_evolved
22.3 (5 CPE variants)
juniper/junos_os_evolved
< 21.4
Published
Apr 12, 2024
Tracked Since
Feb 18, 2026