Cisco Adaptive Security Appliance Direct Memory Access Denial of Service Vulnerability

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Summary

CVECVE-2018-15383
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-10-05 14:29:07 UTC
Updated2026-08-11 19:33:44 UTC
DescriptionA vulnerability in the cryptographic hardware accelerator driver of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a temporary denial of service (DoS) condition. The vulnerability exists because the affected devices have a limited amount of Direct Memory Access (DMA) memory and the affected software improperly handles resources in low-memory conditions. An attacker could exploit this vulnerability by sending a sustained, high rate of malicious traffic to an affected device to exhaust memory on the device. A successful exploit could allow the attacker to exhaust DMA memory on the affected device, which could cause the device to reload and result in a temporary DoS condition.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.024920000 probability, percentile 0.831940000 (date 2026-08-12)

Problem Types: CWE-400 | CWE-770 | CWE-400 CWE-400

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary7.8AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:L/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Cisco Adaptive Security Appliance Software 9.3 All All All
Operating System Cisco Adaptive Security Appliance Software 9.4 All All All
Operating System Cisco Adaptive Security Appliance Software 9.5 All All All
Operating System Cisco Adaptive Security Appliance Software 9.6 All All All
Operating System Cisco Adaptive Security Appliance Software 9.6\(43\) All All All
Operating System Cisco Adaptive Security Appliance Software 9.7 All All All
Operating System Cisco Adaptive Security Appliance Software 9.8 All All All
Operating System Cisco Adaptive Security Appliance Software 9.9 All All All
Operating System Cisco Adaptive Security Appliance Software 9.9\(28\) All All All
Application Cisco Firepower Threat Defense 6.0 All All All
Application Cisco Secure Firewall Threat Defense 6.0.1 All All All
Application Cisco Secure Firewall Threat Defense 6.1.0 All All All
Application Cisco Secure Firewall Threat Defense 6.2.0 All All All
Application Cisco Secure Firewall Threat Defense 6.2.2 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cisco Cisco Adaptive Security Appliance ASA Software affected n/a Not specified

References

ReferenceSourceLinkTags
Cisco ASA DMA Access Bug Lets Remote Users Cause the Target Service to Restart - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
Cisco Adaptive Security Appliance Direct Memory Access Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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