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CVE-2018-0410

UnknownEPSS 4.12%

Last modified

CVE-2018-0410 is a vulnerability of currently unknown severity. A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected software improperly manages memory resources for TCP connections to a targeted device. EPSS estimates a 4.12% chance of exploitation in the next 30 days.

Description

A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected software improperly manages memory resources for TCP connections to a targeted device. An attacker could exploit this vulnerability by establishing a high number of TCP connections to the data interface of an affected device via IPv4 or IPv6. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and result in a DoS condition. System recovery may require manual intervention. Cisco Bug IDs: CSCvf36610.

Metrics

EPSS Probability
4.12%

89.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoWeb Security Appliance9.1.1-074
CiscoWeb Security Appliance9.1.2-010
CiscoWeb Security Appliance9.1.2-022
CiscoWeb Security Appliance9.1.2-039
CiscoWeb Security Appliance10.1.0-204
CiscoWeb Security Appliance10.1.1-235
CiscoWeb Security Appliance10.5.1-270
CiscoWeb Security Appliance10.5.1-296
CiscoWeb Security Appliance10.5.2-042
CiscoWeb Security Appliance11.0.0-641

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-0410?
A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected software improperly manages memory resources for TCP connections to a targeted device. An attacker could exploit this vulnerability by establishing a high number of TCP connections to the data interface of an affected device via IPv4 or IPv6. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and result in a DoS condition. System recovery may require manual intervention. Cisco Bug IDs: CSCvf36610.
How severe is CVE-2018-0410?
Severity scoring for CVE-2018-0410 is pending analysis. The EPSS model estimates a 4.12% probability of exploitation in the next 30 days.
How do I fix CVE-2018-0410?
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