FKIE_CVE-2018-16890
Vulnerability from fkie_nvd - Published: 2019-02-06 20:29 - Updated: 2026-06-17 01:45
Severity
Summary
libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| haxx | libcurl | * | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 18.04 | |
| canonical | ubuntu_linux | 18.10 | |
| debian | debian_linux | 9.0 | |
| netapp | clustered_data_ontap | * | |
| siemens | sinema_remote_connect_client | * | |
| oracle | communications_operations_monitor | 3.4 | |
| oracle | communications_operations_monitor | 4.0 | |
| oracle | http_server | 12.2.1.3.0 | |
| oracle | secure_global_desktop | 5.4 | |
| redhat | enterprise_linux | 8.0 | |
| f5 | big-ip_access_policy_manager | * | |
| f5 | big-ip_access_policy_manager | * | |
| f5 | big-ip_access_policy_manager | * |
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"value": "libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds."
},
{
"lang": "es",
"value": "Libcurl, desde la versi\u00f3n 7.36.0 hasta antes de la 7.64.0, es vulnerable a una lectura de memoria din\u00e1mica (heap) fuera de l\u00edmites. La funci\u00f3n que gestiona los mensajes entrantes NTLM de tipo 2 (\"lib/vauth/ntlm.c:ntlm_decode_type2_target\") no valida los datos entrantes correctamente y est\u00e1 sujeta a una vulnerabilidad de desbordamiento de enteros. Mediante ese desbordamiento, un servidor NTLM malicioso o roto podr\u00eda enga\u00f1ar a libcurl para que acepte una mala combinaci\u00f3n de longitud + desplazamiento que conducir\u00eda a una lectura del b\u00fafer fuera de l\u00edmites."
}
],
"id": "CVE-2018-16890",
"lastModified": "2026-06-17T01:45:00.450",
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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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