CVE-2018-15399

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Summary

CVECVE-2018-15399
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-10-05 14:29:00 UTC
Updated2023-08-15 15:21:00 UTC
DescriptionA vulnerability in the TCP syslog module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust the 1550-byte buffers on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a missing boundary check in an internal function. An attacker could exploit this vulnerability by establishing a man-in-the-middle position between an affected device and its configured TCP syslog server and then maliciously modifying the TCP header in segments that are sent from the syslog server to the affected device. A successful exploit could allow the attacker to exhaust buffer on the affected device and cause all TCP-based features to stop functioning, resulting in a DoS condition. The affected TCP-based features include AnyConnect SSL VPN, clientless SSL VPN, and management connections such as Secure Shell (SSH), Telnet, and HTTPS.

Risk And Classification

Problem Types: CWE-770

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cisco Adaptive Security Appliance Software 9.4(4) All All All
Application Cisco Adaptive Security Appliance Software 9.4\(4\) All All All
Application Cisco Adaptive Security Appliance Software 9.8(2) All All All
Application Cisco Adaptive Security Appliance Software 9.8\(2\) All All All
Operating System Cisco Adaptive Security Appliance Software 9.4\(4\) All All All
Operating System Cisco Adaptive Security Appliance Software 9.8\(2\) All All All
Application Cisco Adaptive Security Appliance Software 9.4\(4\) All All All
Application Cisco Adaptive Security Appliance Software 9.8\(2\) All All All
Application Cisco Firepower Threat Defense 6.2.0 All All All
Application Cisco Firepower Threat Defense 6.2.0 All All All

References

ReferenceSourceLinkTags
Cisco ASA Bug in TCP Syslog Module Lets Remote Users Cause the Target Service to Crash - SecurityTracker SECTRACK www.securitytracker.com Third Party Advisory, VDB Entry
Cisco Adaptive Security Appliance TCP Syslog Denial of Service Vulnerability CISCO 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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