Junos OS Evolved 21.4/22.x DoS via msvcsd Crash (before 21.4R3-S7-EVO)
CVE-2024-39553 Published on July 11, 2024
Junos OS Evolved: Receipt of arbitrary data when sampling service is enabled, leads to partial Denial of Service (DoS).
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.
Vulnerability Analysis
CVE-2024-39553 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity and availability.
Timeline
Initial Publication
Weakness Type
Exposure of Resource to Wrong Sphere
The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.
Products Associated with CVE-2024-39553
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Affected Versions
Juniper Networks Junos OS Evolved:- Version 21.4-EVO and below 21.4R3-S7-EVO is affected.
- Version 22.2-EVO and below 22.2R3-S3-EVO is affected.
- Version 22.3-EVO and below 22.3R3-S2-EVO is affected.
- Version 22.4-EVO and below 22.4R3-EVO is affected.
- Version 23.2-EVO and below 23.2R1-S2-EVO, 23.2R2-EVO is affected.
- Version 21.4 and below 21.4r3-s7 is affected.
- Version 22.2 and below 22.2r3-s3 is affected.
- Version 22.3 and below 22.3r3-s2 is affected.
- Version 22.4 and below 22.4r3 is affected.
- Version 23.2 and below 23.23r1-s2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.