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CVE-2018-15383

HIGHCVSS 7.5/10EPSS 2.49%

Last modified

CVE-2018-15383 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A 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. EPSS estimates a 2.49% chance of exploitation in the next 30 days.

Description

A 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.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
2.49%

83.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoFirepower Threat Defense6.0
CiscoFirepower Threat Defense6.0.1
CiscoFirepower Threat Defense6.1.0
CiscoFirepower Threat Defense6.2.0
CiscoFirepower Threat Defense6.2.2
CiscoFirepower Threat Defense6.2.3
CiscoAdaptive Security Appliance Software9.3
CiscoAdaptive Security Appliance Software9.4
CiscoAdaptive Security Appliance Software9.5
CiscoAdaptive Security Appliance Software9.6
CiscoAdaptive Security Appliance Software9.6\(43\)
CiscoAdaptive Security Appliance Software9.7
CiscoAdaptive Security Appliance Software9.8
CiscoAdaptive Security Appliance Software9.9
CiscoAdaptive Security Appliance Software9.9\(28\)

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-15383?
A 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.
How severe is CVE-2018-15383?
CVE-2018-15383 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.49% probability of exploitation in the next 30 days.
How do I fix CVE-2018-15383?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST