An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).When processing a high rate of specific GRE traffic destined to the device, the respective PFE will hang causing traffic forwarding to stop.
When this issue occurs the following logs can be observed:
<fpc #> MQSS(0): LI-3: Received a parcel with more than 512B accompanying data
CHASSISD_FPC_ASIC_ERROR: ASIC Error detected <...>
This issue affects Junos OS:
* all versions before 21.2R3-S9,
* 21.4 versions before 21.4R3-S8,
* 22.2 versions before 22.2R3-S4,
* 22.4 versions before 22.4R3-S5,
* 23.2 versions before 23.2R2-S2,
* 23.4 versions before 23.4R2.
Metrics
Affected Vendors & Products
References
Link | Providers |
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https://supportportal.juniper.net/JSA96471 |
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History
Wed, 09 Apr 2025 21:15:00 +0000
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Metrics |
ssvc
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Wed, 09 Apr 2025 20:15:00 +0000
Type | Values Removed | Values Added |
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Description | An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).When processing a high rate of specific GRE traffic destined to the device, the respective PFE will hang causing traffic forwarding to stop. When this issue occurs the following logs can be observed: <fpc #> MQSS(0): LI-3: Received a parcel with more than 512B accompanying data CHASSISD_FPC_ASIC_ERROR: ASIC Error detected <...> This issue affects Junos OS: * all versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S8, * 22.2 versions before 22.2R3-S4, * 22.4 versions before 22.4R3-S5, * 23.2 versions before 23.2R2-S2, * 23.4 versions before 23.4R2. | |
Title | Junos OS: MX Series: Decapsulation of specific GRE packets leads to PFE reset | |
Weaknesses | CWE-754 | |
References |
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Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: juniper
Published:
Updated: 2025-04-09T20:29:59.919Z
Reserved: 2025-03-24T19:34:11.323Z
Link: CVE-2025-30660

Updated: 2025-04-09T20:29:54.956Z

Status : Awaiting Analysis
Published: 2025-04-09T20:15:30.307
Modified: 2025-04-11T15:40:10.277
Link: CVE-2025-30660

No data.