A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on PTX Series allows an adjacent attacker to cause a Denial of Service (DoS) by sending genuine BGP flowspec packets which cause an FPC heap memory leak. Once having run out of memory the FPC will crash and restart along with a core dump. Continued receipted of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS All versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R1-S4, 19.4R3-S6; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3-S1; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos Evolved is not affected.
Metrics
No CVSS v4.0
Attack Vector Adjacent Network
Attack Complexity Low
Privileges Required None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
No CVSS v3.0
Access Vector Adjacent Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
AV:A/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
Key SSVC decision points have not yet been added.
Affected Vendors & Products
Vendors | Products |
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Juniper |
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Configuration 1 [-]
AND |
|
No data.
References
Link | Providers |
---|---|
https://kb.juniper.net/JSA11229 |
History
No history.
MITRE
Status: PUBLISHED
Assigner: juniper
Published: 2021-10-19T18:16:57.222934Z
Updated: 2024-09-16T21:08:03.116Z
Reserved: 2021-04-15T00:00:00
Link: CVE-2021-31367
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-10-19T19:15:09.573
Modified: 2024-11-21T06:05:31.457
Link: CVE-2021-31367
Redhat
No data.