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 | ||||
|---|---|---|---|---|---|
|
|||||
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 ≤ |
|||||||
|
|||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-30646",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-09T20:39:38.876844Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-04-09T20:39:47.342Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "21.2R3-S9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "21.4R3-S10",
"status": "affected",
"version": "21.4",
"versionType": "semver"
},
{
"lessThan": "22.2R3-S6",
"status": "affected",
"version": "22.2",
"versionType": "semver"
},
{
"lessThan": "22.4R3-S6",
"status": "affected",
"version": "22.4",
"versionType": "semver"
},
{
"lessThan": "23.2R2-S3",
"status": "affected",
"version": "23.2",
"versionType": "semver"
},
{
"lessThan": "23.4R2-S4",
"status": "affected",
"version": "23.4",
"versionType": "semver"
},
{
"lessThan": "24.2R2",
"status": "affected",
"version": "24.2",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Junos OS Evolved",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "21.4R3-S10-EVO",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "22.2R3-S6-EVO",
"status": "affected",
"version": "22.2-EVO",
"versionType": "semver"
},
{
"lessThan": "22.4R3-S6-EVO",
"status": "affected",
"version": "22.4-EVO",
"versionType": "semver"
},
{
"lessThan": "23.2R2-S3-EVO",
"status": "affected",
"version": "23.2-EVO",
"versionType": "semver"
},
{
"lessThan": "23.4R2-S4-EVO",
"status": "affected",
"version": "23.4-EVO",
"versionType": "semver"
},
{
"lessThan": "24.2R2-EVO",
"status": "affected",
"version": "24.2-EVO",
"versionType": "semver"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"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"
}
],
"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 ]"
}
],
"datePublic": "2025-04-09T16:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"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"
}
],
"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).\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."
}
],
"exploits": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
}
],
"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV4_0": {
"Automatable": "YES",
"Recovery": "AUTOMATIC",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "CONCENTRATED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "MODERATE"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-195",
"description": "CWE-195 Signed to Unsigned Conversion Error",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-04-09T19:53:27.087Z",
"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"shortName": "juniper"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://supportportal.juniper.net/JSA96456"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The following software releases have been updated to resolve this specific issue:\u0026nbsp;\u003cbr\u003eJunos OS: 21.2R3-S9, 21.4R3-S10, 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1, and all subsequent releases.\u003cbr\u003eJunos OS Evolved: 21.4R3-S10-EVO, 22.2R3-S6-EVO, 22.4R3-S6-EVO, 23.2R2-S3-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-EVO, and all subsequent releases.\u003cbr\u003e\u003cbr\u003e"
}
],
"value": "The following software releases have been updated to resolve this specific issue:\u00a0\nJunos OS: 21.2R3-S9, 21.4R3-S10, 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1, and all subsequent releases.\nJunos OS Evolved: 21.4R3-S10-EVO, 22.2R3-S6-EVO, 22.4R3-S6-EVO, 23.2R2-S3-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-EVO, and all subsequent releases."
}
],
"source": {
"advisory": "JSA96456",
"defect": [
"1845098"
],
"discovery": "INTERNAL"
},
"timeline": [
{
"lang": "en",
"time": "2025-04-09T16:00:00.000Z",
"value": "Initial Publication"
}
],
"title": "Junos OS and Junos OS Evolved: Receipt of a malformed LLDP TLV results in l2cpd crash",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "There are no known workarounds for this issue."
}
],
"value": "There are no known workarounds for this issue."
}
],
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"assignerShortName": "juniper",
"cveId": "CVE-2025-30646",
"datePublished": "2025-04-09T19:53:27.087Z",
"dateReserved": "2025-03-24T19:34:11.320Z",
"dateUpdated": "2025-04-09T20:39:47.342Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Loading…
Loading…
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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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.
Loading…
Loading…