Skip to content
fr Sign in
Not rated

CVE-2018-15397 A vulnerability in the implementation of Traffic Flow Confidentiality (TFC) over IPsec functionality in Cisco Adaptive…

Description

A vulnerability in the implementation of Traffic Flow Confidentiality (TFC) over IPsec functionality in 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 restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to an error that may occur if the affected software renegotiates the encryption key for an IPsec tunnel when certain TFC traffic is in flight. An attacker could exploit this vulnerability by sending a malicious stream of TFC traffic through an established IPsec tunnel on an affected device. A successful exploit could allow the attacker to cause a daemon process on the affected device to crash, which could cause the device to crash and result in a DoS condition.

Affected products and versions

Product Affected versions Fixed in
Cisco Adaptive Security Appliance (ASA) Software Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Cisco Adaptive Security Appliance (ASA) Software

The 161 CVEs of Cisco Adaptive Security Appliance (ASA) Software →
CVE-2025-20363 A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure… 9.0 Critical CVE-2025-20254 A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco Secure Firewall Adaptive Security… 5.8 Medium CVE-2025-20263 A vulnerability in the web services interface of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and… 8.6 High CVE-2025-20253 A vulnerability in the IKEv2 feature of Cisco IOS Software, IOS XE Software, Secure Firewall ASA Software, and Secure… 8.6 High
Track this CVE