CVE-2024-39553

Junos OS Evolved: Receipt of arbitrary data when sampling service is enabled, leads to partial Denial of Service (DoS).

Description

An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to send arbitrary data to the device, which leads msvcsd process to crash with limited availability impacting Denial of Service (DoS) and allows unauthorized network access to the device, potentially impacting system integrity. This issue only happens when inline jflow is configured. This does not impact any forwarding traffic. The impacted services MSVCS-DB app crashes momentarily and recovers by itself.  This issue affects Juniper Networks Junos OS Evolved:  * 21.4 versions earlier than 21.4R3-S7-EVO;  * 22.2 versions earlier than 22.2R3-S3-EVO; * 22.3 versions earlier than 22.3R3-S2-EVO; * 22.4 versions earlier than 22.4R3-EVO; * 23.2 versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue:  Junos OS Evolved: 21.4R3-S7-EVO, 22.2R3-S3-EVO, 22.3R3-S2-EVO, 22.4R3-EVO, 23.2R1-S2-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.

Workaround:

  • There are no known workarounds for this issue.

Category

6.9
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.22%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS Evolved
Published at:
Updated at:

References

Link Tags
https://supportportal.juniper.net/JSA79101 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-39553?
CVE-2024-39553 has been scored as a medium severity vulnerability.
How to fix CVE-2024-39553?
To fix CVE-2024-39553: The following software releases have been updated to resolve this specific issue:  Junos OS Evolved: 21.4R3-S7-EVO, 22.2R3-S3-EVO, 22.3R3-S2-EVO, 22.4R3-EVO, 23.2R1-S2-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.
Is CVE-2024-39553 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-39553 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-39553?
CVE-2024-39553 affects Juniper Networks Junos OS Evolved.
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