Medium severity · published Jul 11, 2024
CVE-2024-39553
Junos OS Evolved: Receipt of arbitrary data when sampling service is enabled, leads to partial Denial of Service (DoS).
6.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JO
Junos OS Evolved · Juniper Networks
21.4-EVO before 21.4R3-S7-EVO; 22.2-EVO before 22.2R3-S3-EVO; 22.3-EVO before 22.3R3-S2-EVO; 22.4-EVO before 22.4R3-EVO; 23.2-EVO before 23.2R1-S2-EVO, 23.2R2-EVO · source: vendor, NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-39553
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-39553
Exploit
https://supportportal.juniper.net/JSA79101
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