FKIE_CVE-2020-3246
Vulnerability from fkie_nvd - Published: 2020-05-06 17:15 - Updated: 2024-11-21 05:30
Severity ?
Summary
A vulnerability in the web server of Cisco Umbrella could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user of an affected service. The vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user to access a crafted URL. A successful exploit could allow the attacker to inject arbitrary HTTP headers into valid HTTP responses sent to the browser of the user.
References
{
"configurations": [
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"nodes": [
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"lang": "en",
"value": "A vulnerability in the web server of Cisco Umbrella could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user of an affected service. The vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user to access a crafted URL. A successful exploit could allow the attacker to inject arbitrary HTTP headers into valid HTTP responses sent to the browser of the user."
},
{
"lang": "es",
"value": "Una vulnerabilidad en el servidor web de Cisco Umbrella podr\u00eda permitir a un atacante remoto no autenticado llevar a cabo un ataque de inyecci\u00f3n de tipo carriage return line feed (CRLF) contra un usuario de un servicio afectado. La vulnerabilidad es debido a una comprobaci\u00f3n insuficiente de la entrada de usuario. Un atacante podr\u00eda explotar esta vulnerabilidad al persuadir a un usuario para que acceda a una URL dise\u00f1ada. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir a un atacante inyectar encabezados HTTP arbitrarios dentro de respuestas HTTP v\u00e1lidas enviadas hacia el navegador del usuario."
}
],
"id": "CVE-2020-3246",
"lastModified": "2024-11-21T05:30:38.950",
"metrics": {
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"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"version": "2.0"
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"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
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"source": "nvd@nist.gov",
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"scope": "CHANGED",
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"confidentialityImpact": "NONE",
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"scope": "UNCHANGED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
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"source": "nvd@nist.gov",
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"published": "2020-05-06T17:15:12.480",
"references": [
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"source": "psirt@cisco.com",
"tags": [
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"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-head-inject-n4QArJH"
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"vulnStatus": "Modified",
"weaknesses": [
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"value": "CWE-93"
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"value": "CWE-74"
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"source": "nvd@nist.gov",
"type": "Primary"
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]
}
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Sightings
| Author | Source | Type | Date |
|---|
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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