Medium severity · published Jul 10, 2024
CVE-2024-39513
Junos OS Evolved: Execution of a specific CLI command will cause a crash in the AFT manager
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).
When a specific "clear" command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.
The crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition.
This issue affects Junos OS Evolved:
* All versions before 20.4R3-S9-EVO,
* from 21.2-EVO before 21.2R3-S7-EVO,
* from 21.3-EVO before 21.3R3-S5-EVO,
* from 21.4-EVO before 21.4R3-S6-EVO,
* from 22.1-EVO before 22.1R3-S4-EVO,
* from 22.2-EVO before 22.2R3-S3-EVO,
* from 22.3-EVO before 22.3R3-S3-EVO,
* from 22.4-EVO before 22.4R3-EVO,
* from 23.2-EVO before 23.2R2-EVO.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% 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
before 20.4R3-S9-EVO; 21.2-EVO before 21.2R3-S7-EVO; 21.3-EVO before 21.3R3-S5-EVO; 21.4-EVO before 21.4R3-S6-EVO; 22.1-EVO before 22.1R3-S4-EVO; 22.2-EVO before 22.2R3-S3-EVO; +3 more · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-39513
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-39513
Vendor Advisory
https://supportportal.juniper.net/JSA82978
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