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CVE-2024-39550

MEDIUM
Published 2024-07-11T16:29:03.646Z
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CVSS Score

V3.1
6.5
/10
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.232
Higher than 23.2% of all CVEs

Attack Vector Metrics

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

A Missing Release of Memory after Effective Lifetime vulnerability in the rtlogd process of Juniper Networks Junos OS on MX Series with SPC3 allows an unauthenticated, adjacent attacker to trigger internal events cause ( which can be done by repeated port flaps) to cause a slow memory leak, ultimately leading to a Denial of Service (DoS).

Memory can only be recovered by manually restarting rtlogd process. 
The memory usage can be monitored using the below command.

    user@host> show system processes extensive | match rtlog 

This issue affects Junos OS on MX Series with SPC3 line card: 

* from 21.2R3 before 21.2R3-S8, 
* from 21.4R2 before 21.4R3-S6, 
* from 22.1 before 22.1R3-S5, 
* from 22.2 before 22.2R3-S3, 
* from 22.3 before 22.3R3-S2, 
* from 22.4 before 22.4R3-S1, 
* from 23.2 before 23.2R2, 
* from 23.4 before 23.4R2.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Juniper Networks

Junos OS

Affected Versions:

21.2R3 21.4R2 22.1 22.2 22.3 22.4 23.2 23.4

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-938g-xvpf-6653

Advisory Details

A Missing Release of Memory after Effective Lifetime vulnerability in the rtlogd process of Juniper Networks Junos OS on MX Series with SPC3 allows an unauthenticated, adjacent attacker to trigger internal events cause ( which can be done by repeated port flaps) to cause a slow memory leak, ultimately leading to a Denial of Service (DoS). Memory can only be recovered by manually restarting rtlogd process.  The memory usage can be monitored using the below command. ????user@host> show system processes extensive | match rtlog  This issue affects Junos OS on MX Series with SPC3 line card:  * from 21.2R3 before 21.2R3-S8,  * from 21.4R2 before 21.4R3-S6,  * from 22.1 before 22.1R3-S5,  * from 22.2 before 22.2R3-S3,  * from 22.3 before 22.3R3-S2,  * from 22.4 before 22.4R3-S1,  * from 23.2 before 23.2R2,  * from 23.4 before 23.4R2.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-39550
WEB https://supportportal.juniper.net/JSA83012

Advisory provided by GitHub Security Advisory Database. Published: July 11, 2024, Modified: April 11, 2025

References

https://supportportal.juniper.net/JSA83012
Published: 2024-07-11T16:29:03.646Z
Last Modified: 2024-08-02T04:26:15.926Z
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