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CVE-2018-15388

UnknownEPSS 1.97%

Last modified

CVE-2018-15388 is a vulnerability of currently unknown severity. A vulnerability in the WebVPN login process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause increased CPU utilization on an affected device. The vulnerability is due to excessive processing load for existing WebVPN login operations. EPSS estimates a 1.97% chance of exploitation in the next 30 days.

Description

A vulnerability in the WebVPN login process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause increased CPU utilization on an affected device. The vulnerability is due to excessive processing load for existing WebVPN login operations. An attacker could exploit this vulnerability by sending multiple WebVPN login requests to the device. A successful exploit could allow the attacker to increase CPU load on the device, resulting in a denial of service (DoS) condition.

Metrics

EPSS Probability
1.97%

77.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoAdaptive Security Appliance Software< 9.4.4.34
CiscoAdaptive Security Appliance Software>= 9.5, < 9.6.4.25
CiscoAdaptive Security Appliance Software>= 9.7, < 9.8.4
CiscoAdaptive Security Appliance Software>= 9.9, < 9.9.2.50
CiscoFirepower Threat Defense< 6.2.3.12

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-15388?
A vulnerability in the WebVPN login process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause increased CPU utilization on an affected device. The vulnerability is due to excessive processing load for existing WebVPN login operations. An attacker could exploit this vulnerability by sending multiple WebVPN login requests to the device. A successful exploit could allow the attacker to increase CPU load on the device, resulting in a denial of service (DoS) condition.
How severe is CVE-2018-15388?
Severity scoring for CVE-2018-15388 is pending analysis. The EPSS model estimates a 1.97% probability of exploitation in the next 30 days.
How do I fix CVE-2018-15388?
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.

Are you affected by CVE-2018-15388?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST