CVE-2021-0249 (GCVE-0-2021-0249)
Vulnerability from cvelistv5 – Published: 2021-04-22 19:37 – Updated: 2024-09-16 22:02
VLAI
EPSS
VEX
Title
Junos OS: SRX Series: A remote attacker may be able to cause a PFE buffer overflow to arbitrarily remotely execute code or commands on the target device with UTM enabled.
Summary
On SRX Series devices configured with UTM services a buffer overflow vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS may allow an attacker to arbitrarily execute code or commands on the target to take over or otherwise impact the device by sending crafted packets to or through the device. This issue affects: Juniper Networks Junos OS on SRX Series: 15.1X49 versions prior to 15.1X49-D190; 17.4 versions prior to 17.4R2-S9; 17.4R3 and later versions prior to 18.1R3-S9; 18.2 versions prior to 18.2R3-S1; 18.3 versions prior to 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R2-S3, 18.4R3; 19.1 versions prior to 19.1R1-S4, 19.1R2; 19.2 versions prior to 19.2R1-S1, 19.2R2. An indicator of compromise can be the following text in the UTM log: RT_UTM: AV_FILE_NOT_SCANNED_PASSED_MT:
Severity
8.1 (High)
CWE
- Remote Code Execution
- Remote Command Execution
- Local Code Execution
- Local Command Execution
- CWE-120 - Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA11142 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
15.1X49 , < 15.1X49-D190
(custom)
Affected: 17.4 , < 17.4R2-S9 (custom) Affected: 18.1 , < 18.1R3-S9 (custom) Affected: 18.2 , < 18.2R3-S1 (custom) Affected: 18.3 , < 18.3R2-S3, 18.3R3 (custom) Affected: 18.4 , < 18.4R2-S3, 18.4R3 (custom) Affected: 19.1 , < 19.1R1-S4, 19.1R2 (custom) Affected: 19.2 , < 19.2R1-S1, 19.2R2 (custom) |
guessed |
Date Public
2021-04-14 00:00
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"value": "On SRX Series devices configured with UTM services a buffer overflow vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS may allow an attacker to arbitrarily execute code or commands on the target to take over or otherwise impact the device by sending crafted packets to or through the device. This issue affects: Juniper Networks Junos OS on SRX Series: 15.1X49 versions prior to 15.1X49-D190; 17.4 versions prior to 17.4R2-S9; 17.4R3 and later versions prior to 18.1R3-S9; 18.2 versions prior to 18.2R3-S1; 18.3 versions prior to 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R2-S3, 18.4R3; 19.1 versions prior to 19.1R1-S4, 19.1R2; 19.2 versions prior to 19.2R1-S1, 19.2R2. An indicator of compromise can be the following text in the UTM log: RT_UTM: AV_FILE_NOT_SCANNED_PASSED_MT:"
},
{
"lang": "es",
"value": "En los dispositivos de la Serie SRX configurados con servicios UTM, una vulnerabilidad de desbordamiento de b\u00fafer en el Packet Forwarding Engine (PFE) de Juniper Networks Junos OS, puede permitir a un atacante ejecutar c\u00f3digo o comandos arbitrarios en el objetivo para tomar el control o afectar el dispositivo mediante el env\u00edo de paquetes dise\u00f1ados hacia por medio del dispositivo.\u0026#xa0;Este problema afecta a: Juniper Networks Junos OS en la serie SRX: versiones 15.1X49 anteriores a 15.1X49-D190;\u0026#xa0;versiones 17.4 anteriores a 17.4R2-S9;\u0026#xa0;versiones 17.4R3 y posteriores anteriores a 18.1R3-S9;\u0026#xa0;versiones 18.2 anteriores a 18.2R3-S1;\u0026#xa0;versiones 18.3 anteriores a 18.3R2-S3, 18.3R3;\u0026#xa0;versiones 18.4 anteriores a 18.4R2-S3, 18.4R3;\u0026#xa0;versiones 19.1 anteriores a 19.1R1-S4, 19.1R2;\u0026#xa0;versiones 19.2 anteriores a 19.2R1-S1, 19.2R2.\u0026#xa0;Un indicador de compromiso puede ser el siguiente texto en el registro de UTM: RT_UTM: AV_FILE_NOT_SCANNED_PASSED_MT"
}
],
"id": "CVE-2021-0249",
"lastModified": "2024-11-21T05:42:18.780",
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"published": "2021-04-22T20:15:09.293",
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "On SRX Series devices configured with UTM services a buffer overflow vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS may allow an attacker to arbitrarily execute code or commands on the target to take over or otherwise impact the device by sending crafted packets to or through the device. This issue affects: Juniper Networks Junos OS on SRX Series: 15.1X49 versions prior to 15.1X49-D190; 17.4 versions prior to 17.4R2-S9; 17.4R3 and later versions prior to 18.1R3-S9; 18.2 versions prior to 18.2R3-S1; 18.3 versions prior to 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R2-S3, 18.4R3; 19.1 versions prior to 19.1R1-S4, 19.1R2; 19.2 versions prior to 19.2R1-S1, 19.2R2. An indicator of compromise can be the following text in the UTM log: RT_UTM: AV_FILE_NOT_SCANNED_PASSED_MT:"
},
{
"lang": "es",
"value": "En los dispositivos de la Serie SRX configurados con servicios UTM, una vulnerabilidad de desbordamiento de b\u00fafer en el Packet Forwarding Engine (PFE) de Juniper Networks Junos OS, puede permitir a un atacante ejecutar c\u00f3digo o comandos arbitrarios en el objetivo para tomar el control o afectar el dispositivo mediante el env\u00edo de paquetes dise\u00f1ados hacia por medio del dispositivo.\u0026#xa0;Este problema afecta a: Juniper Networks Junos OS en la serie SRX: versiones 15.1X49 anteriores a 15.1X49-D190;\u0026#xa0;versiones 17.4 anteriores a 17.4R2-S9;\u0026#xa0;versiones 17.4R3 y posteriores anteriores a 18.1R3-S9;\u0026#xa0;versiones 18.2 anteriores a 18.2R3-S1;\u0026#xa0;versiones 18.3 anteriores a 18.3R2-S3, 18.3R3;\u0026#xa0;versiones 18.4 anteriores a 18.4R2-S3, 18.4R3;\u0026#xa0;versiones 19.1 anteriores a 19.1R1-S4, 19.1R2;\u0026#xa0;versiones 19.2 anteriores a 19.2R1-S1, 19.2R2.\u0026#xa0;Un indicador de compromiso puede ser el siguiente texto en el registro de UTM: RT_UTM: AV_FILE_NOT_SCANNED_PASSED_MT"
}
],
"id": "CVE-2021-0249",
"lastModified": "2024-11-21T05:42:18.780",
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"published": "2021-04-22T20:15:09.293",
"references": [
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"tags": [
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"current_release_date": "2026-03-27T15:15:07+00:00",
"cve": "CVE-2021-0249",
"id": "CVE-2021-0249",
"initial_release_date": "2021-04-14T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Junos OS: SRX Series: A remote attacker may be able to cause a PFE buffer overflow to arbitrarily remotely execute code or commands on the target device with UTM enabled.",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-0249.json",
"version": "3"
}
}
}
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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