CVE-2019-1740 (GCVE-0-2019-1740)
Vulnerability from cvelistv5 – Published: 2019-03-27 23:25 – Updated: 2024-11-19 19:13
VLAI
EPSS
VEX
Title
Cisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service Vulnerabilities
Summary
A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability are due to a parsing issue on DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through routers that are running an affected version and have NBAR enabled. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-19 17:25 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
| http://www.securityfocus.com/bid/107597 | vdb-entryx_refsource_BID |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco IOS and Cisco IOS-XE Software |
Affected:
3.16.0S
Affected: 3.16.1S Affected: 3.16.0aS Affected: 3.16.1aS Affected: 3.16.2S Affected: 3.16.2aS Affected: 3.16.0bS Affected: 3.16.0cS Affected: 3.16.3S Affected: 3.16.2bS Affected: 3.16.3aS Affected: 3.16.4S Affected: 3.16.4aS Affected: 3.16.4bS Affected: 3.16.4gS Affected: 3.16.5S Affected: 3.16.4cS Affected: 3.16.4dS Affected: 3.16.4eS Affected: 3.16.5aS Affected: 3.17.0S Affected: 3.17.1S Affected: 3.17.2S Affected: 3.17.1aS Affected: 3.17.3S Affected: 3.17.4S Affected: 3.2.0JA Affected: 16.2.1 Affected: 16.2.2 Affected: 16.3.1 Affected: 16.3.2 Affected: 16.3.3 Affected: 16.3.1a Affected: 16.3.4 Affected: 16.4.1 Affected: 16.4.2 Affected: 16.4.3 Affected: 16.5.1 Affected: 16.5.1a Affected: 16.5.1b Affected: 3.18.0aS Affected: 3.18.0S Affected: 3.18.1S Affected: 3.18.2S Affected: 3.18.3S Affected: 3.18.4S Affected: 3.18.0SP Affected: 3.18.1SP Affected: 3.18.1aSP Affected: 3.18.1gSP Affected: 3.18.1bSP Affected: 3.18.1cSP Affected: 3.18.2SP Affected: 3.18.1hSP Affected: 3.18.2aSP Affected: 3.18.1iSP |
guessed |
Date Public
2019-03-27 00:00
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"version_value": "16.3.2"
},
{
"version_affected": "=",
"version_value": "16.3.3"
},
{
"version_affected": "=",
"version_value": "16.3.1a"
},
{
"version_affected": "=",
"version_value": "16.3.4"
},
{
"version_affected": "=",
"version_value": "16.4.1"
},
{
"version_affected": "=",
"version_value": "16.4.2"
},
{
"version_affected": "=",
"version_value": "16.4.3"
},
{
"version_affected": "=",
"version_value": "16.5.1"
},
{
"version_affected": "=",
"version_value": "16.5.1a"
},
{
"version_affected": "=",
"version_value": "16.5.1b"
},
{
"version_affected": "=",
"version_value": "3.18.0aS"
},
{
"version_affected": "=",
"version_value": "3.18.0S"
},
{
"version_affected": "=",
"version_value": "3.18.1S"
},
{
"version_affected": "=",
"version_value": "3.18.2S"
},
{
"version_affected": "=",
"version_value": "3.18.3S"
},
{
"version_affected": "=",
"version_value": "3.18.4S"
},
{
"version_affected": "=",
"version_value": "3.18.0SP"
},
{
"version_affected": "=",
"version_value": "3.18.1SP"
},
{
"version_affected": "=",
"version_value": "3.18.1aSP"
},
{
"version_affected": "=",
"version_value": "3.18.1gSP"
},
{
"version_affected": "=",
"version_value": "3.18.1bSP"
},
{
"version_affected": "=",
"version_value": "3.18.1cSP"
},
{
"version_affected": "=",
"version_value": "3.18.2SP"
},
{
"version_affected": "=",
"version_value": "3.18.1hSP"
},
{
"version_affected": "=",
"version_value": "3.18.2aSP"
},
{
"version_affected": "=",
"version_value": "3.18.1iSP"
}
]
}
}
]
},
"vendor_name": "Cisco"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability are due to a parsing issue on DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through routers that are running an affected version and have NBAR enabled. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition."
}
]
},
"exploit": [
{
"lang": "en",
"value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"impact": {
"cvss": {
"baseScore": "8.6",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.0"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-20"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "20190327 Cisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service Vulnerabilities",
"refsource": "CISCO",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-nbar"
},
{
"name": "107597",
"refsource": "BID",
"url": "http://www.securityfocus.com/bid/107597"
}
]
},
"source": {
"advisory": "cisco-sa-20190327-nbar",
"defect": [
[
"CSCvb51688",
"CSCvc94856",
"CSCvc99155",
"CSCvf01501"
]
],
"discovery": "INTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2019-1740",
"datePublished": "2019-03-27T23:25:18.976Z",
"dateReserved": "2018-12-06T00:00:00.000Z",
"dateUpdated": "2024-11-19T19:13:41.033Z",
"state": "PUBLISHED"
},
"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.
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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