CVE-2018-0296 (GCVE-0-2018-0296)
Vulnerability from cvelistv5 – Published: 2018-06-07 12:00 – Updated: 2026-01-12 21:33
VLAI?
CISA KEV
Summary
A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. It is also possible on certain software releases that the ASA will not reload, but an attacker could view sensitive system information without authentication by using directory traversal techniques. The vulnerability is due to lack of proper input validation of the HTTP URL. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. An exploit could allow the attacker to cause a DoS condition or unauthenticated disclosure of information. This vulnerability applies to IPv4 and IPv6 HTTP traffic. This vulnerability affects Cisco ASA Software and Cisco Firepower Threat Defense (FTD) Software that is running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), ASA 1000V Cloud Firewall, ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4100 Series Security Appliance, Firepower 9300 ASA Security Module, FTD Virtual (FTDv). Cisco Bug IDs: CSCvi16029.
Severity ?
7.5 (High)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Cisco Adaptive Security Appliance unknown |
Affected:
Cisco Adaptive Security Appliance unknown
|
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e75d9778-7d07-4a9b-b4a2-c0add4add0bf
Exploited: Yes
Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEV entry: Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability | Affected: Cisco / Adaptive Security Appliance (ASA) | Description: Cisco Adaptive Security Appliance (ASA) contains an improper input validation vulnerability with HTTP URLs. Exploitation could allow an attacker to cause a denial-of-service (DoS) condition or information disclosure. | Required action: Apply updates per vendor instructions. | Due date: 2022-05-03 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2018-0296
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-20 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Adaptive Security Appliance (ASA) |
| Due Date | 2022-05-03 |
| Date Added | 2021-11-03 |
| Vendorproject | Cisco |
| Vulnerabilityname | Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:28 UTC
| Updated: 2026-02-02 12:28 UTC
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},
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This vulnerability applies to IPv4 and IPv6 HTTP traffic. This vulnerability affects Cisco ASA Software and Cisco Firepower Threat Defense (FTD) Software that is running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), ASA 1000V Cloud Firewall, ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4100 Series Security Appliance, Firepower 9300 ASA Security Module, FTD Virtual (FTDv). Cisco Bug IDs: CSCvi16029.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en la interfaz web de Cisco Adaptive Security Appliance (ASA) podr\u00eda permitir que un atacante remoto sin autenticar haga que el dispositivo afectado se reinicie inesperadamente y provoque una denegaci\u00f3n de servicio (DoS) como consecuencia. Tambi\u00e9n es posible en ciertas versiones del software que ASA no se recargue, pero un atacante podr\u00eda ver informaci\u00f3n sensible del sistema sin autenticaci\u00f3n mediante el uso de t\u00e9cnicas de salto de directorio. Esta vulnerabilidad se debe a la falta de validaci\u00f3n de entradas adecuada de la URL HTTP. Un atacante podr\u00eda explotar esta vulnerabilidad enviando una petici\u00f3n HTTP manipulada a un dispositivo afectado. Su explotaci\u00f3n podr\u00eda permitir a un atacante provocar una denegaci\u00f3n de servicio o la divulgaci\u00f3n no autenticada de informaci\u00f3n. Esta vulnerabilidad aplica al tr\u00e1fico HTTP IPv4 y IPv6. 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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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