FKIE_CVE-2018-8778
Vulnerability from fkie_nvd - Published: 2018-04-03 22:29 - Updated: 2026-06-17 02:05
Severity
Summary
In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ruby-lang | ruby | * | |
| ruby-lang | ruby | * | |
| ruby-lang | ruby | * | |
| ruby-lang | ruby | * | |
| ruby-lang | ruby | 2.6.0 | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 17.10 | |
| debian | debian_linux | 7.0 | |
| debian | debian_linux | 8.0 | |
| debian | debian_linux | 9.0 | |
| redhat | enterprise_linux | 6.0 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 7.4 | |
| redhat | enterprise_linux | 7.5 | |
| redhat | enterprise_linux | 7.6 |
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"value": "In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure."
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"value": "En Ruby, en versiones anteriores a la 2.2.10, versiones 2.3.x anteriores a la 2.3.7, versiones 2.4.x anteriores a la 2.4.4, versiones 2.5.x anteriores a la 2.5.1 y la versi\u00f3n 2.6.0-preview1, un atacante que controla el formato de desempaquetado (similar a las vulnerabilidades de cadena de formato) puede desencadenar una sublectura de b\u00fafer en el m\u00e9todo String#unpack. Esto resulta en una gran divulgaci\u00f3n de informaci\u00f3n controlada."
}
],
"id": "CVE-2018-8778",
"lastModified": "2026-06-17T02:05:21.960",
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"published": "2018-04-03T22:29:00.773",
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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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