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6.8 Medium

CVE-2019-1687 A vulnerability in the TCP proxy functionality for Cisco Adaptive Security Appliance (ASA) Software and Cisco…

Description

A vulnerability in the TCP proxy functionality for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to an error in TCP-based packet inspection, which could cause the TCP packet to have an invalid Layer 2 (L2)-formatted header. An attacker could exploit this vulnerability by sending a crafted TCP packet sequence to the targeted device. A successful exploit could allow the attacker to cause a DoS condition.

Affected products and versions

Product Affected versions Fixed in
Cisco Adaptive Security Appliance (ASA) Software 9.9 earliest → < 9.9.2.50 9.9.2.50
Cisco Adaptive Security Appliance (ASA) Software 9.8 earliest → < 9.8.4 9.8.4
Cisco Adaptive Security Appliance (ASA) Software 9.4 earliest → < 9.4.4.34 9.4.4.34

References

Timeline

  1. Published
  2. Last modified

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