CVE-2024-39542 (GCVE-0-2024-39542)
Vulnerability from cvelistv5 – Published: 2024-07-11 16:17 – Updated: 2024-08-02 04:26
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: A malformed CFM packet or specific transit traffic leads to FPC crash
Summary
An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series with MPC10/11 or LC9600, MX304, and Junos OS Evolved on ACX Series and PTX Series allows an unauthenticated, network based attacker to cause a Denial-of-Service (DoS).
This issue can occur in two scenarios:
1. If a device, which is configured with SFLOW and ECMP, receives specific valid transit traffic, which is subject to sampling, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. (This scenario is only applicable to PTX but not to ACX or MX.)
2. If a device receives a malformed CFM packet on an interface configured with CFM, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. Please note that the CVSS score is for the formally more severe issue 1.
The CVSS score for scenario 2. is: 6.5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
This issue affects Junos OS:
* All versions before 21.2R3-S4,
* 21.4 versions before 21.4R2,
* 22.2 versions before 22.2R3-S2;
Junos OS Evolved:
* All versions before 21.2R3-S8-EVO,
* 21.4 versions before 21.4R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-11 19:31 UTC
CWE
- 1286 Improper Validation of Syntactic Correctness of Input
- CWE-1286 - Improper Validation of Syntactic Correctness of Input
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA83002 | vendor-advisory |
Impacted products
4 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 21.2R3-S4
(semver)
Affected: 21.4 , < 21.4R2 (semver) Affected: 22.2 , < 22.2R2-S1, 22.2R3 (semver) |
guessed | |
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 21.2R3-S8-EVO
(semver)
Affected: 21.4 , < 21.4R2-EVO (semver) |
guessed | |
| juniper | junos_os |
Affected:
0 , < 21.2r3-s4
(semver)
Affected: 21.4 , < 21.4r2 (semver) Affected: 22.2 , < 22.2r2-s1 (semver) Affected: 22.2 , < 22.2r3 (semver) cpe:2.3:o:juniper:junos_os:*:*:*:*:*:*:*:* |
||
| juniper | junos_os_evolved |
Affected:
0 , < 21.2r3-s8-evo
(semver)
Affected: 21.4 , < 21.4r2-evo (semver) cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* |
Date Public
2024-07-10 16:00
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"id": "CVE-2024-39542",
"lastModified": "2024-11-21T09:27:58.267",
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"published": "2024-07-11T17:15:13.367",
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If a device receives a malformed CFM packet on an interface configured with CFM, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted.\u00a0Please note that the CVSS score is for the formally more severe issue 1.\\n\\nThe CVSS score for scenario 2. is: 6.5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\\n\\n\\n\\n\\nThis issue affects Junos OS:\\n\\n\\n\\n * All versions before\u00a021.2R3-S4,\\n * 21.4 versions before 21.4R2,\\n * 22.2 versions before 22.2R3-S2;\u00a0\\n\\n\\n\\n\\nJunos OS Evolved:\\n\\n\\n\\n\\n * All versions before\u00a021.2R3-S8-EVO,\\n * 21.4 versions before 21.4R2-EVO.\"},{\"lang\":\"es\",\"value\":\"Una validaci\u00f3n inadecuada de la correcci\u00f3n sint\u00e1ctica de la vulnerabilidad de entrada en Packet Forwarding Engine (PFE) de Juniper Networks Junos OS en la serie MX con MPC10/11 o LC9600, MX304 y Junos OS evolucionado en las series ACX y PTX permite una vulnerabilidad basada en red no autenticada atacante cause una denegaci\u00f3n de servicio (DoS). 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"redhat_vex": {
"current_release_date": "2025-05-28T22:06:48+00:00",
"cve": "CVE-2024-39542",
"id": "CVE-2024-39542",
"initial_release_date": "2024-07-10T16:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Junos OS and Junos OS Evolved: A malformed CFM packet or specific transit traffic leads to FPC crash",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-39542.json",
"version": "3"
},
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\"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"LOW\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Juniper Networks\", \"product\": \"Junos OS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"21.2R3-S4\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.4\", \"lessThan\": \"21.4R2\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.2\", \"lessThan\": \"22.2R2-S1, 22.2R3\", \"versionType\": \"semver\"}], \"platforms\": [\"MX Series with MPC10 MPC11 or LC9600\", \"MX304\"], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"Juniper Networks\", \"product\": \"Junos OS Evolved\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"21.2R3-S8-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.4\", \"lessThan\": \"21.4R2-EVO\", \"versionType\": \"semver\"}], \"platforms\": [\"PTX Series\", \"ACX Series\"], \"defaultStatus\": \"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eJuniper SIRT is not aware of any malicious exploitation of this vulnerability.\u003c/p\u003e\", \"base64\": false}]}], \"solutions\": [{\"lang\": \"eng\", \"value\": \"The following software releases have been updated to resolve this specific issue:\\nJunos OS: 21.2R3-S4, 21.4R2, 22.2R2-S1, 22.2R3, 22.3R1, and all subsequent releases.\\nJunos OS Evolved: 21.2R3-S8-EVO, 21.4R2-EVO, 22.2R1-EVO, and all subsequent releases.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"The following software releases have been updated to resolve this specific issue:\u003cbr\u003eJunos OS: 21.2R3-S4, 21.4R2, 22.2R2-S1, 22.2R3, 22.3R1, and all subsequent releases.\u003cbr\u003eJunos OS Evolved: 21.2R3-S8-EVO, 21.4R2-EVO, 22.2R1-EVO, and all subsequent releases.\\n\u003cbr\u003e\", \"base64\": false}]}], \"datePublic\": \"2024-07-10T16:00:00.000Z\", \"references\": [{\"url\": \"https://supportportal.juniper.net/JSA83002\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"There are no known workarounds for this issue.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"There are no known workarounds for this issue.\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-av217\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series with MPC10/11 or LC9600, MX304, and Junos OS Evolved on ACX Series and PTX Series allows an unauthenticated, network based attacker to cause a Denial-of-Service (DoS).\\n\\nThis issue can occur in two scenarios:\\n\\n1. If a device, which is configured with SFLOW and ECMP, receives specific valid transit traffic, which is subject to sampling, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. (This scenario is only applicable to PTX but not to ACX or MX.)\\n\\n2. If a device receives a malformed CFM packet on an interface configured with CFM, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted.\\u00a0Please note that the CVSS score is for the formally more severe issue 1.\\n\\nThe CVSS score for scenario 2. is: 6.5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\\n\\n\\n\\n\\nThis issue affects Junos OS:\\n\\n\\n\\n * All versions before\\u00a021.2R3-S4,\\n * 21.4 versions before 21.4R2,\\n * 22.2 versions before 22.2R3-S2;\\u00a0\\n\\n\\n\\n\\nJunos OS Evolved:\\n\\n\\n\\n\\n * All versions before\\u00a021.2R3-S8-EVO,\\n * 21.4 versions before 21.4R2-EVO.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series with MPC10/11 or \u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eLC9600\u003c/span\u003e, MX304, and Junos OS Evolved on ACX Series and PTX Series allows an unauthenticated, network based attacker to cause a Denial-of-Service (DoS).\u003cbr\u003e\u003cbr\u003eThis issue can occur in two scenarios:\u003cbr\u003e\u003cbr\u003e1. If a device, which is configured with SFLOW and ECMP, receives specific valid transit traffic, which is subject to sampling, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. (This scenario is only applicable to PTX but not to ACX or MX.)\u003cbr\u003e\u003cbr\u003e2. If a device receives a malformed CFM packet on an interface configured with CFM, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted.\u0026nbsp;\u003cp\u003ePlease note that the CVSS score is for the formally more severe issue 1.\u003c/p\u003e\u003cp\u003eThe CVSS score for scenario 2. is: 6.5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\u003c/p\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e\u003cp\u003eThis issue affects Junos OS:\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions before\u0026nbsp;\u003cspan style=\\\"background-color: var(--wht);\\\"\u003e21.2R3-S4,\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan style=\\\"background-color: var(--wht);\\\"\u003e21.4 versions before 21.4R2,\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan style=\\\"background-color: var(--wht);\\\"\u003e22.2 versions before 22.2R3-S2;\u0026nbsp;\u003c/span\u003e\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003e\u003cspan style=\\\"background-color: var(--wht);\\\"\u003eJunos OS Evolved:\u003c/span\u003e\u003cbr\u003e\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions before\u0026nbsp;\u003cspan style=\\\"background-color: var(--wht);\\\"\u003e21.2R3-S8-EVO,\u003c/span\u003e\u003c/li\u003e\u003cli\u003e21.4 versions before 21.4R2-EVO\u003cspan style=\\\"background-color: var(--wht);\\\"\u003e.\u003c/span\u003e\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"1286 Improper Validation of Syntactic Correctness of Input\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"To be exposed to this issue at least one of CFM or sampling needs to be configured:\\n\\n1. CFM:\\n\\n\\u00a0 [\\u00a0 protocols oam\\u00a0ethernet\\u00a0connectivity-fault-management\\u00a0maintenance-domain \u003cmd_name\u003e\\u00a0maintenance-association \u003cma_name\u003e\\u00a0mep \u003cnumber\u003e\\u00a0interface \u003cinterface\u003e ]\\nOR\\n\\u00a0 [\\u00a0 protocols oam ethernet connectivity-fault-management maintenance-domain \u003cmd_name\u003e interface \u003cinterface\u003e\\u00a0/ vlan \u003cvlan\u003e ]\\n\\n2. ECMP, sampling\\n\\n\\u00a0 [ \\n\\nprotocols sflow interfaces \u003cinterface\u003e\\n\\n ]\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"To be exposed to this issue at least one of CFM or sampling needs to be configured:\u003cbr\u003e\u003cbr\u003e1. CFM:\u003cbr\u003e\u003cbr\u003e\u0026nbsp; [\u0026nbsp; protocols oam\u0026nbsp;ethernet\u0026nbsp;connectivity-fault-management\u0026nbsp;maintenance-domain \u0026lt;md_name\u0026gt;\u0026nbsp;maintenance-association \u0026lt;ma_name\u0026gt;\u0026nbsp;mep \u0026lt;number\u0026gt;\u0026nbsp;interface \u0026lt;interface\u0026gt; ]\u003cbr\u003eOR\u003cbr\u003e\u0026nbsp; [\u0026nbsp; protocols oam ethernet connectivity-fault-management maintenance-domain \u0026lt;md_name\u0026gt; interface \u0026lt;interface\u0026gt;\u0026nbsp;/ vlan \u0026lt;vlan\u0026gt; ]\u003cbr\u003e\u003cbr\u003e2. ECMP, sampling\u003cbr\u003e\u003cbr\u003e\u0026nbsp; [ \\n\\n\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eprotocols sflow interfaces \u0026lt;interface\u0026gt;\u003c/span\u003e\\n\\n ]\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2024-07-11T16:17:56.613Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-39542\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-07-11T20:48:20.405Z\", \"dateReserved\": \"2024-06-25T15:12:53.244Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2024-07-11T16:17:56.613Z\", \"assignerShortName\": \"juniper\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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