CVE-2024-30390: Junos OS Evolved: Connection limits is not being enforced while the resp. rate limit is being enforced
First published: Fri Apr 12 2024(Updated: )
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.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Networks Junos OS Evolved | <21.4R3-S4-EVO | |
| Juniper Networks Junos OS Evolved | <22.1R3-S3-EVO | |
| Juniper Networks Junos OS Evolved | <22.2R3-S2-EVO | |
| Juniper Networks Junos OS Evolved | <22.3R2-S1-EVO | |
| Juniper Networks Junos OS Evolved | ||
| Juniper Junos os Evolved | <21.4 | |
| Juniper Junos os Evolved | =21.4 | |
| Juniper Junos os Evolved | =21.4-r1 | |
| Juniper Junos os Evolved | =21.4-r1-s1 | |
| Juniper Junos os Evolved | =21.4-r1-s2 | |
| Juniper Junos os Evolved | =21.4-r2 | |
| Juniper Junos os Evolved | =21.4-r2-s1 | |
| Juniper Junos os Evolved | =21.4-r2-s2 | |
| Juniper Junos os Evolved | =21.4-r3 | |
| Juniper Junos os Evolved | =21.4-r3-s1 | |
| Juniper Junos os Evolved | =21.4-r3-s2 | |
| Juniper Junos os Evolved | =21.4-r3-s3 | |
| Juniper Junos os Evolved | =22.1 | |
| Juniper Junos os Evolved | =22.1-r1 | |
| Juniper Junos os Evolved | =22.1-r1-s1 | |
| Juniper Junos os Evolved | =22.1-r1-s2 | |
| Juniper Junos os Evolved | =22.1-r2 | |
| Juniper Junos os Evolved | =22.1-r2-s1 | |
| Juniper Junos os Evolved | =22.1-r3 | |
| Juniper Junos os Evolved | =22.1-r3-s1 | |
| Juniper Junos os Evolved | =22.1-r3-s2 | |
| Juniper Junos os Evolved | =22.2 | |
| Juniper Junos os Evolved | =22.2-r1 | |
| Juniper Junos os Evolved | =22.2-r1-s1 | |
| Juniper Junos os Evolved | =22.2-r1-s2 | |
| Juniper Junos os Evolved | =22.2-r2 | |
| Juniper Junos os Evolved | =22.2-r2-s1 | |
| Juniper Junos os Evolved | =22.2-r2-s2 | |
| Juniper Junos os Evolved | =22.2-r3 | |
| Juniper Junos os Evolved | =22.2-r3-s1 | |
| Juniper Junos os Evolved | =22.3 | |
| Juniper Junos os Evolved | =22.3-r1 | |
| Juniper Junos os Evolved | =22.3-r1-s1 | |
| Juniper Junos os Evolved | =22.3-r1-s2 | |
| Juniper Junos os Evolved | =22.3-r2 |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 20.4R3-S9-EVO, 21.4R3-S4-EVO, 22.1R3-S3-EVO, 22.2R3-S2-EVO, 22.3R2-S1-EVO, 22.3R3-EVO, 22.4R1-EVO, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-30390?
CVE-2024-30390 has a moderate severity rating as it allows limited Denial of Service (DoS) to the management plane.
How do I fix CVE-2024-30390?
To fix CVE-2024-30390, it is recommended to upgrade to the latest versions of Junos OS Evolved that are beyond 22.3R2-S1-EVO.
Who is affected by CVE-2024-30390?
CVE-2024-30390 affects users of Juniper Networks Junos OS Evolved versions up to 21.4R3-S4-EVO, 22.1R3-S3-EVO, 22.2R3-S2-EVO, and 22.3R2-S1-EVO.
What type of attack does CVE-2024-30390 facilitate?
CVE-2024-30390 facilitates a network-based Denial of Service (DoS) attack due to improper restrictions on excessive authentication attempts.
Is CVE-2024-30390 remotely exploitable?
Yes, CVE-2024-30390 can be exploited by unauthenticated attackers remotely over the network.
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