Description
In Juniper Networks Junos OS Evolved, receipt of a stream of specific genuine Layer 2 frames may cause the Advanced Forwarding Toolkit (AFT) manager process (Evo-aftmand), responsible for handling Route, Class-of-Service (CoS), Firewall operations within the packet forwarding engine (PFE) to crash and restart, leading to a Denial of Service (DoS) condition. By continuously sending this specific stream of genuine Layer 2 frames, an attacker can repeatedly crash the PFE, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R1-EVO. This issue does not affect Junos OS versions.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
Vendor Solution
The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 20.4R1-EVO, and all subsequent releases.
Vendor Workaround
There are no viable workarounds for this issue.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-2858 | In Juniper Networks Junos OS Evolved, receipt of a stream of specific genuine Layer 2 frames may cause the Advanced Forwarding Toolkit (AFT) manager process (Evo-aftmand), responsible for handling Route, Class-of-Service (CoS), Firewall operations within the packet forwarding engine (PFE) to crash and restart, leading to a Denial of Service (DoS) condition. By continuously sending this specific stream of genuine Layer 2 frames, an attacker can repeatedly crash the PFE, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R1-EVO. This issue does not affect Junos OS versions. |
References
| Link | Providers |
|---|---|
| https://kb.juniper.net/JSA11134 |
|
History
No history.
Status: PUBLISHED
Assigner: juniper
Published:
Updated: 2024-09-16T17:49:30.356Z
Reserved: 2020-10-27T00:00:00.000Z
Link: CVE-2021-0239
No data.
Status : Modified
Published: 2021-04-22T20:15:08.943
Modified: 2024-11-21T05:42:16.777
Link: CVE-2021-0239
No data.
OpenCVE Enrichment
No data.
Weaknesses
EUVD