CVE-2025-30646 (GCVE-0-2025-30646)
Vulnerability from cvelistv5
Published
2025-04-09 19:53
Modified
2025-04-09 20:39
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-195 - Signed to Unsigned Conversion Error
Summary
A Signed to Unsigned Conversion Error vulnerability in the Layer 2 Control Protocol daemon (l2cpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an unauthenticated adjacent attacker sending a specifically malformed LLDP TLV to cause the l2cpd process to crash and restart, causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.
When an LLDP telemetry subscription is active, receipt of a specifically malformed LLDP TLV causes the l2cpd process to crash and restart.
This issue affects:
Junos OS:
* All versions before 21.2R3-S9,
* from 21.4 before 21.4R3-S10,
* from 22.2 before 22.2R3-S6,
* from 22.4 before 22.4R3-S6,
* from 23.2 before 23.2R2-S3,
* from 23.4 before 23.4R2-S4,
* from 24.2 before 24.2R2;
Junos OS Evolved:
* All versions before 21.4R3-S10-EVO,
* from 22.2-EVO before 22.2R3-S6-EVO,
* from 22.4-EVO before 22.4R3-S6-EVO,
* from 23.2-EVO before 23.2R2-S3-EVO,
* from 23.4-EVO before 23.4R2-S4-EVO,
* from 24.2-EVO before 24.2R2-EVO.
References
| ► | URL | Tags | |||
|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ► | Juniper Networks | Junos OS |
Version: 0 ≤ Version: 21.4 ≤ Version: 22.2 ≤ Version: 22.4 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ |
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a Denial of Service (DoS).\\u00a0 Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.\\n\\nWhen an LLDP telemetry subscription is active, receipt of a specifically malformed LLDP TLV causes the l2cpd process to crash and restart.\\n\\n\\n\\nThis issue affects:\\n\\nJunos OS: \\n\\n\\n * All versions before 21.2R3-S9,\\u00a0\\n * from 21.4 before 21.4R3-S10,\\u00a0\\n * from 22.2 before 22.2R3-S6,\\u00a0\\n * from 22.4 before 22.4R3-S6,\\u00a0\\n * from 23.2 before 23.2R2-S3,\\u00a0\\n * from 23.4 before 23.4R2-S4,\\u00a0\\n * from 24.2 before 24.2R2;\\u00a0\\n\\n\\n\\n\\nJunos OS Evolved:\\u00a0\\n\\n\\n\\n * All versions before 21.4R3-S10-EVO,\\n * from 22.2-EVO before 22.2R3-S6-EVO,\\u00a0\\n * from 22.4-EVO before 22.4R3-S6-EVO,\\u00a0\\n * from 23.2-EVO before 23.2R2-S3-EVO,\\u00a0\\n * from 23.4-EVO before 23.4R2-S4-EVO,\\u00a0\\n * from 24.2-EVO before 24.2R2-EVO.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"A Signed to Unsigned Conversion Error vulnerability in the Layer 2 Control Protocol daemon (l2cpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an unauthenticated adjacent attacker sending a specifically malformed LLDP TLV to cause the l2cpd process to crash and restart, causing a Denial of Service (DoS).\u0026nbsp; Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.\u003cbr\u003e\u003cbr\u003eWhen an LLDP telemetry subscription is active, receipt of a specifically malformed LLDP TLV causes the l2cpd process to crash and restart.\u003cbr\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e\u003cp\u003eThis issue affects:\u003c/p\u003e\u003cp\u003eJunos OS: \u003cbr\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions before 21.2R3-S9,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 21.4 before 21.4R3-S10,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 22.2 before 22.2R3-S6,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 22.4 before 22.4R3-S6,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2-S3,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.4 before 23.4R2-S4,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.2 before 24.2R2;\u0026nbsp;\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eJunos OS Evolved:\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions before 21.4R3-S10-EVO,\u003c/li\u003e\u003cli\u003efrom 22.2-EVO before 22.2R3-S6-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 22.4-EVO before 22.4R3-S6-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2-EVO before 23.2R2-S3-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.4-EVO before 23.4R2-S4-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.2-EVO before 24.2R2-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-195\", \"description\": \"CWE-195 Signed to Unsigned Conversion Error\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"Only systems configured for LLDP with active telemetry subscriptions are vulnerable to this issue:\\n\\n[ protocols lldp ]\\n\\nand:\\n\\n[ system services extension-service request-response ]\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Only systems configured for LLDP with active telemetry subscriptions are vulnerable to this issue:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[ protocols lldp ]\u003c/tt\u003e\u003cbr\u003e\u003cbr\u003eand:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[ system services extension-service request-response ]\u003c/tt\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2025-04-09T19:53:27.087Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2025-30646\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-04-09T20:39:47.342Z\", \"dateReserved\": \"2025-03-24T19:34:11.320Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2025-04-09T19:53:27.087Z\", \"assignerShortName\": \"juniper\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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